JPH0569764B2 - - Google Patents
Info
- Publication number
- JPH0569764B2 JPH0569764B2 JP2029773A JP2977390A JPH0569764B2 JP H0569764 B2 JPH0569764 B2 JP H0569764B2 JP 2029773 A JP2029773 A JP 2029773A JP 2977390 A JP2977390 A JP 2977390A JP H0569764 B2 JPH0569764 B2 JP H0569764B2
- Authority
- JP
- Japan
- Prior art keywords
- product
- reaction
- aminolysis
- boron nitride
- process according
- 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.)
- Expired - Lifetime
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052582 BN Inorganic materials 0.000 claims abstract description 21
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 19
- 239000012298 atmosphere Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 3
- 150000002367 halogens Chemical class 0.000 claims abstract description 3
- 239000000047 product Substances 0.000 claims description 21
- 239000000919 ceramic Substances 0.000 claims description 18
- 238000000197 pyrolysis Methods 0.000 claims description 15
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 claims description 14
- 238000007098 aminolysis reaction Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 150000003141 primary amines Chemical class 0.000 claims description 10
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 3
- 229930195734 saturated hydrocarbon Natural products 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 abstract description 4
- 125000002924 primary amino group Chemical class [H]N([H])* 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 36
- 229920000642 polymer Polymers 0.000 description 23
- 239000002243 precursor Substances 0.000 description 16
- 239000011541 reaction mixture Substances 0.000 description 11
- 239000012299 nitrogen atmosphere Substances 0.000 description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 238000005979 thermal decomposition reaction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000002411 thermogravimetry Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000921 elemental analysis Methods 0.000 description 3
- -1 filaments Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 150000001923 cyclic compounds Chemical class 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- TZHYBRCGYCPGBQ-UHFFFAOYSA-N [B].[N] Chemical compound [B].[N] TZHYBRCGYCPGBQ-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910000039 hydrogen halide Inorganic materials 0.000 description 1
- 239000012433 hydrogen halide Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- HHLJUSLZGFYWKW-UHFFFAOYSA-N triethanolamine hydrochloride Chemical compound Cl.OCCN(CCO)CCO HHLJUSLZGFYWKW-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G79/00—Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule
- C08G79/08—Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule a linkage containing boron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
- C01B21/064—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with boron
- C01B21/0646—Preparation by pyrolysis of boron and nitrogen containing compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/583—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on boron nitride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Products (AREA)
- Inorganic Fibers (AREA)
- Saccharide Compounds (AREA)
Description
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Claims (1)
- ãç¹èš±è«æ±ã®ç¯å²ã ïŒ æ¬¡åŒïŒïŒïŒ ãåã ã®å°ãªããšãïŒåã®ïŒ¢âããªããã²ããã©ãŸãŒã«
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ãäºãç¹åŸŽãšããçªåç¡ŒçŽ ã®è£œé æ¹æ³ã ïŒ è©²åºïŒ²ã¯ã飜åçåæ°ŽçŽ åºããæãäºãç¹åŸŽ
ãšããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒé èšèŒã®æ¹æ³ã ïŒ è©²åºïŒ²ã¯ãC1ãC4ã®çåæ°ŽçŽ åºããæãäº
ãç¹åŸŽãšããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒãïŒé ã®ããã
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æ±ã®ç¯å²ç¬¬ïŒãïŒé ã®ããããã«èšèŒã®æ¹æ³ã ïŒ è©²åå¿ã¯ãææ©æº¶åªäžã§å®æœããäºãç¹åŸŽãš
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ã補åãç¹ã«ãã¢ã€ããŒåã¯è¢«èãã€ã«ã ã«è³Šåœ¢
ããäºãç¹åŸŽãšããç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒãïŒïŒé
èšèŒã®æ¹æ³ã ïŒïŒ ç¹èš±è«æ±ã®ç¯å²ç¬¬ïŒïŒé èšèŒã®æ¹æ³ã§å®æœ
ããŠåŸãããçªåç¡ŒçŽ ã®ã»ã©ããã¯è£œåã
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR89/02169 | 1989-02-20 | ||
| FR8902169A FR2643358B1 (fr) | 1989-02-20 | 1989-02-20 | Procede de preparation de nitrure de bore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02263714A JPH02263714A (ja) | 1990-10-26 |
| JPH0569764B2 true JPH0569764B2 (ja) | 1993-10-01 |
Family
ID=9378935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2029773A Granted JPH02263714A (ja) | 1989-02-20 | 1990-02-13 | çªåç¡ŒçŽ ã®è£œé æ¹æ³ |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5021371A (ja) |
| EP (1) | EP0384857B1 (ja) |
| JP (1) | JPH02263714A (ja) |
| AT (1) | ATE106362T1 (ja) |
| DE (1) | DE69009225T2 (ja) |
| FR (1) | FR2643358B1 (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2679228A1 (fr) * | 1991-07-17 | 1993-01-22 | Atochem | Procede de preparation de ceramiques en nitrure de bore a partir de precurseurs derives de l'hydrazine. |
| US5250484A (en) * | 1991-11-26 | 1993-10-05 | Mobil Oil Corporation | Surface modified porous acidic crystalline catalyst |
| JP2720381B2 (ja) * | 1995-10-03 | 1998-03-04 | ã¢ããã³ã¹ã»ã»ã©ããã¯ã¹ã»ã€ã³ã¿ãŒãã·ã§ãã« ã³ãŒãã¬ãŒã·ã§ã³ | ä»»æã®é»æ°æµæçãæããç±åè§£çªåããŠçŽ æåœ¢äœã®è£œé æ¹æ³ |
| RU2160224C1 (ru) * | 1999-09-08 | 2000-12-10 | ÐбÑеÑÑвП Ñ ÐŸÐ³ÑаМОÑеММПй ПÑвеÑÑÑвеММПÑÑÑÑ "РПЌбПМОÑ" | СпПÑПб пПлÑÑÐµÐœÐžÑ Ð¿ÐžÑПлОÑОÑеÑкПгП МОÑÑОЎа бПÑа |
| JP2002220213A (ja) * | 2001-01-18 | 2002-08-09 | Sony Corp | ïœïœïœæçªçŽ ååç©ã®åææ¹æ³ |
| JP4596985B2 (ja) * | 2005-06-06 | 2010-12-15 | ïŒªïœæ¥é±æ¥ç³ãšãã«ã®ãŒæ ªåŒäŒç€Ÿ | å€åæ§ç©è³ªããã³ãã®è£œé æ¹æ³ |
| FR2933690B1 (fr) * | 2008-07-11 | 2010-09-10 | Centre Nat Rech Scient | Nanonitrure de bore cubique |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054708A (en) * | 1970-06-04 | 1977-10-18 | Pfizer Inc. | Film of pyrolytic graphite having bi-directional reinforcing properties |
| US4578283A (en) * | 1982-09-23 | 1986-03-25 | Allied Corporation | Polymeric boron nitrogen dopant |
| JPS6147735A (ja) * | 1984-08-11 | 1986-03-08 | Isoji Taniguchi | ææ©çªåããŠçŽ éåäœã®è£œé æ³ |
| US4581468A (en) * | 1985-05-13 | 1986-04-08 | Ultrasystems, Inc. | Boron nitride preceramic polymers |
| US4801439A (en) * | 1986-09-15 | 1989-01-31 | Sri International | Catalytic process for making compounds having a non-Lewis acid/base bond between a group IIIA metal and group VA nonmetal |
| US4810436A (en) * | 1986-11-21 | 1989-03-07 | Hoechst Celanese Corp. | Process for the formation of boron-containing ceramics from organoboron preceramic polymers |
| US4707556A (en) * | 1987-02-13 | 1987-11-17 | Ultrasystems Defense And Space, Inc. | Boron nitride polymeric precursors |
-
1989
- 1989-02-20 FR FR8902169A patent/FR2643358B1/fr not_active Expired - Lifetime
-
1990
- 1990-02-13 JP JP2029773A patent/JPH02263714A/ja active Granted
- 1990-02-14 DE DE69009225T patent/DE69009225T2/de not_active Expired - Fee Related
- 1990-02-14 EP EP90420080A patent/EP0384857B1/fr not_active Expired - Lifetime
- 1990-02-14 AT AT90420080T patent/ATE106362T1/de not_active IP Right Cessation
- 1990-02-20 US US07/482,073 patent/US5021371A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| FR2643358B1 (fr) | 1991-11-22 |
| JPH02263714A (ja) | 1990-10-26 |
| US5021371A (en) | 1991-06-04 |
| ATE106362T1 (de) | 1994-06-15 |
| FR2643358A1 (fr) | 1990-08-24 |
| EP0384857B1 (fr) | 1994-06-01 |
| DE69009225T2 (de) | 1994-09-15 |
| DE69009225D1 (de) | 1994-07-07 |
| EP0384857A1 (fr) | 1990-08-29 |
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| JPH02293306A (ja) | ããŠçŽ åã³çªçŽ ãåºã«ããéåäœãçªåããŠçŽ ãäž»äœãšããã»ã©ããã¯çšã®åé§ç©è³ªãšããŠäœ¿çšããæ¹æ³äžŠã³ã«ããããŠåŸãã»ã©ããã¯è£œå | |
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| JPH0559186A (ja) | éåäœã·ã©ã¶ã³ããã®è£œé æ¹æ³ããã³ãã®äœ¿çš |