WO1994013610A1 - Procede de fluoration d'hydrocarbure halogene - Google Patents
Procede de fluoration d'hydrocarbure halogene Download PDFInfo
- Publication number
- WO1994013610A1 WO1994013610A1 PCT/JP1993/001787 JP9301787W WO9413610A1 WO 1994013610 A1 WO1994013610 A1 WO 1994013610A1 JP 9301787 W JP9301787 W JP 9301787W WO 9413610 A1 WO9413610 A1 WO 9413610A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- alumina
- reaction
- hcfc
- halogenated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/21—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms with simultaneous increase of the number of halogen atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/125—Halogens; Compounds thereof with scandium, yttrium, aluminium, gallium, indium or thallium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
- C07C17/087—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/206—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being HX
Definitions
- the present invention relates to a method for fluorinating a hydrocarbon containing a halogen, and more particularly to a method for producing a fluorine-containing compound by fluorinating a halogen-containing alkyne or an argen with hydrogen fluoride.
- the molecular composition of the alternative Freon gas is such that the chlorine atoms in the Freon gas molecules are replaced with hydrogen or fluorine atoms.
- the alternative CFC candidate is generally a fraction with a higher fluorine content than before.
- a fluorination reaction that produces such a molecule having a high fluorine content
- a fluorination method using a liquid phase reaction is not preferable, and a fluorination method using a gas phase reaction is required.
- Chromium oxide-based and alumina-based catalysts have been known as catalysts for gas phase fluorination or hydrogen fluoride addition reaction.
- chromium oxide catalysts US Pat. No. 3,258,500
- aluminum fluoride catalysts US Pat. No. 2,669,590
- alumina There is a catalyst (GB 1 357 246) or a partially fluorinated alumina catalyst (GB 100 485).
- the present invention relates to an alumina-based catalyst among these catalysts.
- an alumina catalyst its use as a carrier is well known.
- catalysts using activated alumina do not always have sufficient activity. Therefore, a catalyst supporting alumina and a metal as a carrier (European Patent No.
- the present invention provides a method for efficiently producing a fluorine-containing compound by developing an effective catalyst for a gas phase fluorination or hydrogen fluoride addition reaction of a halogenated alkene or a halogenated algen with hydrogen fluoride, respectively.
- the purpose is to provide.
- the present invention relates to a reaction for vapor-phase fluorination or hydrogen fluoride addition of hydrogen halide or halogenide having 1 to 5 carbon atoms with hydrogen fluoride in the presence of a catalyst.
- Fluorination of halogenated hydrocarbons characterized by using a catalyst comprising at least one element selected from Zr, Mo, Ge, Sn and Pb and alumina, fluoridated alumina or partially fluorinated alumina.
- CF 2 CC1H (hereinafter abbreviated as HCFC—1122) is CF 3
- the catalyst used in the present invention comprises (a) at least one metal element selected from Ti, V, Zr, Mo, Ge, Sn and Pb and (b) alumina, aluminum fluoride or partially fluorinated alumina. Consists of As a method for preparing the catalyst, there are an impregnation method and a coprecipitation method. Although the object of the present invention can be achieved by any method, the activity of the catalyst prepared by the coprecipitation method is remarkably large.
- alumina or aluminum fluoride is impregnated with a solution of a starting material containing the above metal element, and the solvent is removed to prepare a catalyst. Therefore, in the catalyst prepared by the impregnation method, the metal element is supported on alumina or the like and mainly exists on the surface thereof.
- the X-ray diffraction peak is
- 77-including alumina is preferred.
- the alumina in this case is an active alumina having a fluorination activity that can be used alone.
- Commercially available anoremina can be used, for example, KHA-24, NKH1-24 (trademark) (manufactured by Sumitomo Chemical), Neobee KGB (trademark) (manufactured by Mizusawa Chemical), 612N ⁇ N612N8 (trademark) ( JGC Chemicals) c.
- Starting materials for the elements to be impregnated include inorganic acid salts such as chlorides, nitrates and sulfates of the above metal elements, organic acid salts and oxides such as acetate salts and propionate salts, and oxygen acids containing the above metal elements or oxyacids thereof. Salt or the like can be used.
- inorganic acid salts such as chlorides, nitrates and sulfates of the above metal elements
- organic acid salts and oxides such as acetate salts and propionate salts
- oxygen acids containing the above metal elements or oxyacids thereof oxygen acids containing the above metal elements or oxyacids thereof. Salt or the like can be used.
- the ratio of the metal element to alumina or aluminum fluoride As the ratio of the metal element to alumina or aluminum fluoride,
- It is 0.05 to 10 mol%, preferably 0.05 to 5 mol%. If the amount is less than 0.05 mol%, no improvement in catalytic activity can be expected, and if it is more than 10 mol%, the activity is reduced.
- a dehydrated alumina or aluminum fluoride is immersed in an aqueous solution or an organic solvent solution in which an additive element is prepared in a predetermined amount, and then dried under reduced pressure using an evaporator with stirring. Prepare by heating and drying in air.
- the method of addition of the supported type is not limited to this method, and a commonly used impregnation method such as immersing alumina / aluminum fluoride after vacuum treatment or drying by filtration without vacuum suction. Is fine.
- partially fluorinated alumina may be used instead of alumina.
- the coprecipitation method a precipitant is added to a solution obtained by dissolving an aluminum compound and a compound containing the above metal element in a common solvent, for example, water, coprecipitated, and the precipitate is calcined. Therefore, in the catalyst prepared by the coprecipitation method, when the metal element is present on the particle surface, it is considered that the metal element exists not only on the particle surface but also inside the particle.
- the same material as the starting material in the case of impregnation described above can be used.
- the ratio of the above metal element in the catalyst prepared by the coprecipitation method of the present invention is set to 0.05 to ⁇ 0 mol%. If the amount is less than 0.05 mol%, the object of the present invention cannot be achieved. In addition, even if it is 50 mol% or more, the activity is reduced.
- One example of a method for preparing a catalyst by a coprecipitation method is, for example, a method in which a predetermined ratio of an aluminum salt and a salt of the above metal element are dissolved in water, and an alkali such as NH 4 Add to 8-9, precipitate both as hydroxides, wash the precipitate thoroughly with water, dry, and form the dried product, then bake at 400-600 ° C for 2-4 hours Method.
- an alkali such as NH 4 Add to 8-9
- the catalyst prepared by the impregnation method or the coprecipitation method is preferably fluorinated before being subjected to the reaction.
- a fluorination method a method of contacting with HF at a temperature higher than the temperature used for the reaction is preferable, but raising the temperature more than necessary lowers the catalytic activity. Therefore, it is necessary to appropriately select the reaction temperature and to suppress the temperature rise due to the fluorination reaction by diluting HF with nitrogen or the like.
- the fluorination temperature is in the range of 200-400 ° C.
- the fluorination of the catalyst is preferably performed until the fluorine content is in the range of 50 to 80% by weight (based on A1F3). When used in higher temperature reactions, it is better to fluorinate to about 90% by weight.
- fluorination of alumina can be performed before the impregnation treatment.
- the catalyst thus prepared can be used for the reaction of haloalkanes, haloargens and HF.
- a material having excellent HF resistance such as Inconel or Hastelloy, as a reaction tube material.
- the reaction temperature varies depending on the reaction, and is generally in the range of 150 to 45 CTC. Assuming that the chemical equivalent is 1, the ratio of HF to the raw material is usually 1 or more. This ratio may be large, but it is disadvantageous in the process.
- the reaction temperature is usually about 150 to 300 ° C, preferably 150 to 250 ° C.
- the higher the reaction temperature the faster the reaction proceeds, but if the reaction temperature is too high, HCFC-1122 cannot be reduced enough. Therefore, the reaction temperature depends on the intended amount of HCFC-1122.
- the 1,1,1-trifluoro-2-chloroethane (HCFC-133a) produced by the reaction can be separated from HFC-134a by rectification.
- the separated HCFC-133a can be reused as a raw material for HFC-134a.
- a catalyst was prepared and fluorinated in the same manner as in Example 1 except that 0.0015 mol of germanium oxide was used as an additional element.
- the conversion of HCFC-1212 to HCFC-133a was 38.5% at a temperature of 175 ° C.
- a catalyst was prepared and fluorinated in the same manner as in Example 1 except that 0.0015 mol of stannous chloride was dissolved in 30 ml of water (hydrochloric acid) as an additional element.
- a reaction was carried out using this catalyst under the same conditions as in Example 1, the conversion of HCFC-1122 to HCFC-133a was 35.5% at a temperature of 175 ° C o
- a catalyst was prepared in the same manner as in Example 1 except that the catalyst was prepared by immersing 0.3 mol of the alumina used in Example 1 in a solution of 0.0027 mol of stannic chloride dissolved in 28 ml of ethyl alcohol as an additive element ( However, the desolvent temperature under reduced pressure was 40 ° C) and fluorinated.
- the conversion of HCFC-1122 to HCFC-133a was 46.6% at a temperature of 175 ° C.
- a catalyst was prepared and fluorinated in the same manner as in Example 1 except that 0.00021 mol of ammonium paramolybdate was dissolved in 30 ml of water as an additional element.
- the conversion of HCFC-1212 to HCFC-133a was 1.75. 38 at C %Met.
- a catalyst was prepared and fluorinated in the same manner as in Example 1 except that 0.00043 mol of ammonium paramolybdate was dissolved in 30 ml of water as an additional element.
- this catalyst was subjected to a reaction under the same conditions as in Example 1, the conversion of HCFC-1122 to HCFC-133a was 175. 41.3% at C
- a catalyst was prepared and fluorinated in the same manner as in Example 1 except that 0.0015 mol of ammonium metavanadate was dissolved in 3 Oral water as an additional element. When this catalyst was reacted under the same conditions using Example 1, the conversion of HCFC-1122 to HCFC-133a was 175. C was 40.8%.
- a catalyst was prepared and fluorinated in the same manner as in Example 1, except that 0.0015 mol of lead nitrate was dissolved in 3 Oml of water as an additional element.
- the conversion of HCFC-1212 to HCF C-133a was 35% at a temperature of 175 ° C.
- a catalyst was prepared and fluorinated in the same manner as in Example 1, except that 0.0015 mol of zirconyl nitrate was dissolved in 3 Oml of water as an additional element.
- the conversion of HCFC-1212 to HCFC-133a was 33% at a temperature of 175 ° C. Comparative Example 1
- Example 1 The same alumina used in Examples 1 to 10 was dehydrated at 250 ° C.
- the reaction was carried out in the same manner as in Example 1 except that fluorination treatment was carried out in the same manner as in Example 1 without adding any metal, and 10 g thereof was used.
- the conversion is 17.0% at a temperature of 175 ° C.
- Catalysts were prepared and fluorinated in the same manner as in Example 1 except that 0.0015 mol of copper chloride, nickel chloride, or silver nitrate was used as an additive element.
- the conversion of HCFC-1122 to HCFC-133a was 24%, 26.4%, and 20.5% at a temperature of 175 ° C, respectively. there were.
- the activity was lower than the catalyst composition of the present invention (molar amount supported).
- a 30% aqueous solution of titanium sulfate was mixed with 2 kg of a 10% aqueous solution of aluminum nitrate so that the T1 / A1 ratio was 5 mol%. While stirring the mixture, 4N-ammonia water was added until the pH reached 8.58, and the precipitate was separated by centrifugation. Washing with pure water and centrifugation were repeated twice, and the obtained cake was dried at 120 ° C for 14 hours. Thereafter, the mixture was powder-framed, sized, tableted, and baked at 500 ° C. for 3 hours.
- This catalyst was fluorinated in the same fluorination manner as in Example 1 was filled with its 10g to Hasuteroi steel reaction tube having an inner diameter of 15 mm, the HCFC 1122 in the same manner as in Example 1 was reacted with hydrogen fluoride The conversion of HCFC-1122 to HCFC-133a was 98.4%.
- a catalyst containing only alumina was prepared in the same manner as in Example 10 except that titanium sulfate was not mixed in the method for preparing alumina-titanium oxide. This al Mina's X-ray diffraction peak was identified for low alumina (including 7-alumina). This alumina was fluorinated in the same manner as in Example 1. When a reaction was carried out under the same conditions as in Example 1 using this catalyst, the conversion of HCFC-1222 to HCFC-133a was 15% at a temperature of 175 ° C.
- Example 10 4 g of the same catalyst used in Example 10 was packed in a Hastelloy reaction tube having an inner diameter of 15 mm. A mixed gas of HCC-30 (CH 2 C 12 ) 6 Oml / min and hydrogen fluoride 20 Oml / min was passed through the reaction tube, and reacted at a temperature of 300 ° C. 11. (The conversion of -30 was 75.1%, and the selectivity for HFC-32 (CH 2 F 2 ) was 82%.
- Example 6 4 g of the same catalyst as used in Example 6 was charged into a Hastelloy reaction tube having an inner diameter of 15 mm. A mixed gas of HCC-30 (CH 2 C 12 ) and hydrogen fluoride was passed through this reaction tube under the same conditions as in Example 11 to cause a reaction. The conversion of HCC-30 was 44.8% and the selectivity of HFC-32 was 72.5%.
- Example 3 4 g of the same catalyst as used in Example 3 was charged into a Hastelloy reaction tube having an inner diameter of 15 nm. A mixed gas of HCC-30 (CH 2 C 12 ) and hydrogen fluoride was passed through this reaction tube under the same conditions as in Example 11 to cause a reaction. The conversion of 110-30 was 35%, and the selectivity of HFC-32 was 65%.
- Example 14 10 g of the same catalyst as used in Example 6 was charged into a Hastelloy reaction tube having an inner diameter of 15 ⁇ .
- HCF C- 122 selectivity of (CF 2 C 1 CHC 1 2 ) Were 94.7%, 3.4% and 1.6%, respectively.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/464,636 US5710353A (en) | 1992-10-05 | 1993-12-09 | Process for fluorinating halogenated hydrocarbon |
| DE69321606T DE69321606T2 (de) | 1992-12-15 | 1993-12-09 | Verfahren zur fluorierung von halogenierten kohlenwassenstoffen |
| EP94902096A EP0675096B1 (en) | 1992-12-15 | 1993-12-09 | Process for fluorinatng halogenated hydrocarbon |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4/334174 | 1992-12-15 | ||
| JP33417492A JP3605831B2 (ja) | 1992-10-05 | 1992-12-15 | ハロゲン化炭化水素のフッ素化方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1994013610A1 true WO1994013610A1 (fr) | 1994-06-23 |
Family
ID=18274368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1993/001787 Ceased WO1994013610A1 (fr) | 1992-10-05 | 1993-12-09 | Procede de fluoration d'hydrocarbure halogene |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0675096B1 (ja) |
| DE (1) | DE69321606T2 (ja) |
| WO (1) | WO1994013610A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6463095B1 (en) | 1993-12-28 | 2002-10-08 | Nec Corporation | IC card radio modem and communication system using the same for communicating with a plurality of different infrastructures |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19548999A1 (de) * | 1995-12-28 | 1997-07-03 | Solvay Fluor & Derivate | Katalytische Gemische auf Basis von Titan und Zinn und ihre Verwendung |
| RU2152254C1 (ru) * | 1997-09-29 | 2000-07-10 | Институт нефтехимии и катализа АН РБ и УНЦ РАН | Катализатор для гидрохлорирования ненасыщенных соединений |
| RU2151640C1 (ru) * | 1997-09-29 | 2000-06-27 | Институт нефтехимии и катализа АН РБ и УНЦ РАН | Катализатор для гидрохлорирования ненасыщенных соединений |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197232A (en) * | 1981-05-27 | 1982-12-03 | Asahi Glass Co Ltd | Fluorination of halogenated hydrocarbon |
| JPH0248538A (ja) * | 1988-06-29 | 1990-02-19 | E I Du Pont De Nemours & Co | 気相ハイドロフロリネーション方法 |
| WO1992016480A1 (en) * | 1991-03-20 | 1992-10-01 | E.I. Du Pont De Nemours And Company | Process for the manufacture of 2-chloro-1,1,1-trifluoroethane |
-
1993
- 1993-12-09 WO PCT/JP1993/001787 patent/WO1994013610A1/ja not_active Ceased
- 1993-12-09 EP EP94902096A patent/EP0675096B1/en not_active Expired - Lifetime
- 1993-12-09 DE DE69321606T patent/DE69321606T2/de not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57197232A (en) * | 1981-05-27 | 1982-12-03 | Asahi Glass Co Ltd | Fluorination of halogenated hydrocarbon |
| JPH0248538A (ja) * | 1988-06-29 | 1990-02-19 | E I Du Pont De Nemours & Co | 気相ハイドロフロリネーション方法 |
| WO1992016480A1 (en) * | 1991-03-20 | 1992-10-01 | E.I. Du Pont De Nemours And Company | Process for the manufacture of 2-chloro-1,1,1-trifluoroethane |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0675096A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6463095B1 (en) | 1993-12-28 | 2002-10-08 | Nec Corporation | IC card radio modem and communication system using the same for communicating with a plurality of different infrastructures |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0675096A1 (en) | 1995-10-04 |
| DE69321606D1 (de) | 1998-11-19 |
| EP0675096B1 (en) | 1998-10-14 |
| EP0675096A4 (en) | 1996-01-10 |
| DE69321606T2 (de) | 1999-04-01 |
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