DE3923034A1 - Verfahren zur herstellung katalytisch wirksamer beschichtungen fuer die cyanwasserstoffherstellung - Google Patents
Verfahren zur herstellung katalytisch wirksamer beschichtungen fuer die cyanwasserstoffherstellungInfo
- Publication number
- DE3923034A1 DE3923034A1 DE3923034A DE3923034A DE3923034A1 DE 3923034 A1 DE3923034 A1 DE 3923034A1 DE 3923034 A DE3923034 A DE 3923034A DE 3923034 A DE3923034 A DE 3923034A DE 3923034 A1 DE3923034 A1 DE 3923034A1
- Authority
- DE
- Germany
- Prior art keywords
- suspension
- aluminum
- platinum
- coating
- metal
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000001257 hydrogen Substances 0.000 title description 6
- 229910052739 hydrogen Inorganic materials 0.000 title description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 69
- 238000000576 coating method Methods 0.000 claims description 53
- 239000011248 coating agent Substances 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 44
- 239000000725 suspension Substances 0.000 claims description 41
- 229910052782 aluminium Inorganic materials 0.000 claims description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 26
- 229910052697 platinum Inorganic materials 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims description 17
- 150000002739 metals Chemical class 0.000 claims description 15
- 229910021529 ammonia Inorganic materials 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 150000002736 metal compounds Chemical class 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 11
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 7
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 7
- 238000009736 wetting Methods 0.000 claims description 7
- 238000001704 evaporation Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 150000001298 alcohols Chemical class 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- 239000010970 precious metal Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 3
- 150000004760 silicates Chemical class 0.000 claims description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 2
- 150000002170 ethers Chemical class 0.000 claims 1
- 229920000620 organic polymer Polymers 0.000 claims 1
- 239000011877 solvent mixture Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000005470 impregnation Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 8
- -1 platinum metals Chemical class 0.000 description 7
- 238000005984 hydrogenation reaction Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000002243 precursor Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 244000000626 Daucus carota Species 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 235000002767 Daucus carota Nutrition 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910001507 metal halide Inorganic materials 0.000 description 2
- 150000005309 metal halides Chemical class 0.000 description 2
- 239000003791 organic solvent mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000013008 thixotropic agent Substances 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000589614 Pseudomonas stutzeri Species 0.000 description 1
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- SSVFCHUBLIJAMI-UHFFFAOYSA-N platinum;hydrochloride Chemical compound Cl.[Pt] SSVFCHUBLIJAMI-UHFFFAOYSA-N 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
-
- 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
- B01J27/24—Nitrogen compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C3/00—Cyanogen; Compounds thereof
- C01C3/02—Preparation, separation or purification of hydrogen cyanide
- C01C3/0208—Preparation in gaseous phase
- C01C3/0229—Preparation in gaseous phase from hydrocarbons and ammonia in the absence of oxygen, e.g. HMA-process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3923034A DE3923034A1 (de) | 1989-07-13 | 1989-07-13 | Verfahren zur herstellung katalytisch wirksamer beschichtungen fuer die cyanwasserstoffherstellung |
| EP90112178A EP0407809B1 (de) | 1989-07-13 | 1990-06-27 | Verfahren zur Herstellung katalytisch wirksamer Beschichtigungen für die Cyanwasserstoffherstellung |
| DE9090112178T DE59001349D1 (de) | 1989-07-13 | 1990-06-27 | Verfahren zur herstellung katalytisch wirksamer beschichtigungen fuer die cyanwasserstoffherstellung. |
| US07/550,746 US5039643A (en) | 1989-07-13 | 1990-07-10 | Method for the production of catalytically active coatings for the production of hydrogen cyanide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3923034A DE3923034A1 (de) | 1989-07-13 | 1989-07-13 | Verfahren zur herstellung katalytisch wirksamer beschichtungen fuer die cyanwasserstoffherstellung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3923034A1 true DE3923034A1 (de) | 1991-02-07 |
| DE3923034C2 DE3923034C2 (enExample) | 1991-07-11 |
Family
ID=6384873
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3923034A Granted DE3923034A1 (de) | 1989-07-13 | 1989-07-13 | Verfahren zur herstellung katalytisch wirksamer beschichtungen fuer die cyanwasserstoffherstellung |
| DE9090112178T Expired - Fee Related DE59001349D1 (de) | 1989-07-13 | 1990-06-27 | Verfahren zur herstellung katalytisch wirksamer beschichtigungen fuer die cyanwasserstoffherstellung. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9090112178T Expired - Fee Related DE59001349D1 (de) | 1989-07-13 | 1990-06-27 | Verfahren zur herstellung katalytisch wirksamer beschichtigungen fuer die cyanwasserstoffherstellung. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5039643A (enExample) |
| EP (1) | EP0407809B1 (enExample) |
| DE (2) | DE3923034A1 (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5766672A (en) * | 1995-09-05 | 1998-06-16 | Nippondenso Co., Ltd. | Method of manufacturing an oxygen concentration detector element |
| EP4410767A1 (de) | 2023-02-03 | 2024-08-07 | Röhm GmbH | Nachhaltiges c3 verfahren mit integrierter erzeugung von rohstoffen |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4409140A1 (de) * | 1994-03-17 | 1995-09-21 | Degussa | Wäßrige Lösungen von Organopolysiloxan-Ammoniumverbindungen, ihre Herstellung und Verwendung |
| DE19524158A1 (de) * | 1995-07-03 | 1997-01-09 | Degussa | Verfahren zur Herstellung von Blausäure |
| DE19617040C1 (de) * | 1996-04-27 | 1997-10-30 | Degussa | Verfahren zur Herstellung katalytisch wirksamer Beschichtungen für die Synthese von Cyanwasserstoff |
| DE19653991A1 (de) | 1996-12-21 | 1998-06-25 | Degussa | Reaktor zur Durchführung endothermer katalytischer Reaktionen |
| DE19743100A1 (de) | 1997-09-30 | 1999-04-01 | Degussa | Verfahren zur Herstellung eines Schalenkatalysators |
| DE19754982A1 (de) * | 1997-12-11 | 1999-06-17 | Degussa | Verfahren zur Herstellung von Blausäure |
| US6221327B1 (en) | 1998-05-15 | 2001-04-24 | Rohm And Haas Company | Catalyst system using flow-through radiation shielding and a process for producing hydrogen cyanide using the same |
| US7230035B2 (en) * | 2002-12-30 | 2007-06-12 | Conocophillips Company | Catalysts for the conversion of methane to synthesis gas |
| DE10309209A1 (de) * | 2003-02-28 | 2004-09-09 | Degussa Ag | Verfahren zur Herstellung von Cyanwasserstoff nach dem BMA-Verfahren und Katalysator zu seiner Durchführung |
| EP2813286A1 (de) * | 2013-06-11 | 2014-12-17 | Evonik Industries AG | Reaktionsrohr und Verfahren zur Herstellung von Cyanwasserstoff |
| EP3055056B1 (de) | 2013-10-11 | 2019-12-18 | Evonik Operations GmbH | Reaktionsrohr und verfahren zur herstellung von cyanwasserstoff |
| PL3209607T3 (pl) * | 2014-10-20 | 2020-07-13 | Haldor Topsøe A/S | Proces katalitycznego przygotowania cyjanowodoru z metanu i amoniaku |
| EP3301075A1 (en) | 2016-09-28 | 2018-04-04 | Evonik Degussa GmbH | Method for producing hydrogen cyanide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112215A (en) * | 1959-10-09 | 1963-11-26 | Lonza Ag | Preparation of catalytically active coatings |
| DE3723535A1 (de) * | 1987-07-16 | 1989-01-26 | Degussa | Verfahren zur herstellung von cyanwasserstoff |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068681B (enExample) * | 1959-11-12 | |||
| US2768876A (en) * | 1950-07-26 | 1956-10-30 | Degussa | Process for the production of hcn from volatile hydrocarbons and ammonia |
| DE1767974C3 (de) * | 1968-07-06 | 1975-09-25 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Verfahren zur Herstellung von Blausäure und Wasserstoff aus Acetonitril und Ammoniak |
| DE3208774A1 (de) * | 1982-03-11 | 1983-09-15 | Bergwerksverband Gmbh, 4300 Essen | Verfahren zur herstellung von cyanwasserstoff unter gleichzeitiger bildung von aluminiumnitrid |
-
1989
- 1989-07-13 DE DE3923034A patent/DE3923034A1/de active Granted
-
1990
- 1990-06-27 EP EP90112178A patent/EP0407809B1/de not_active Expired - Lifetime
- 1990-06-27 DE DE9090112178T patent/DE59001349D1/de not_active Expired - Fee Related
- 1990-07-10 US US07/550,746 patent/US5039643A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112215A (en) * | 1959-10-09 | 1963-11-26 | Lonza Ag | Preparation of catalytically active coatings |
| DE3723535A1 (de) * | 1987-07-16 | 1989-01-26 | Degussa | Verfahren zur herstellung von cyanwasserstoff |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5766672A (en) * | 1995-09-05 | 1998-06-16 | Nippondenso Co., Ltd. | Method of manufacturing an oxygen concentration detector element |
| EP4410767A1 (de) | 2023-02-03 | 2024-08-07 | Röhm GmbH | Nachhaltiges c3 verfahren mit integrierter erzeugung von rohstoffen |
Also Published As
| Publication number | Publication date |
|---|---|
| US5039643A (en) | 1991-08-13 |
| EP0407809A1 (de) | 1991-01-16 |
| EP0407809B1 (de) | 1993-05-05 |
| DE59001349D1 (de) | 1993-06-09 |
| DE3923034C2 (enExample) | 1991-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |