SK36694A3 - Method of preparation of aminotriazine derivatives - Google Patents
Method of preparation of aminotriazine derivatives Download PDFInfo
- Publication number
- SK36694A3 SK36694A3 SK366-94A SK36694A SK36694A3 SK 36694 A3 SK36694 A3 SK 36694A3 SK 36694 A SK36694 A SK 36694A SK 36694 A3 SK36694 A3 SK 36694A3
- Authority
- SK
- Slovakia
- Prior art keywords
- group
- carbon atoms
- alkyl
- phenyl
- hydrogen
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- QQOWHRYOXYEMTL-UHFFFAOYSA-N triazin-4-amine Chemical class N=C1C=CN=NN1 QQOWHRYOXYEMTL-UHFFFAOYSA-N 0.000 title abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 19
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 10
- 238000003797 solvolysis reaction Methods 0.000 claims abstract description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 36
- 239000001257 hydrogen Substances 0.000 claims description 28
- 229910052739 hydrogen Inorganic materials 0.000 claims description 28
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 28
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 23
- -1 phenylbutyl Chemical group 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 125000000217 alkyl group Chemical group 0.000 claims description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 125000005843 halogen group Chemical group 0.000 claims description 17
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 12
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 claims description 10
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 10
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims description 10
- 125000004346 phenylpentyl group Chemical group C1(=CC=CC=C1)CCCCC* 0.000 claims description 10
- 125000004344 phenylpropyl group Chemical group 0.000 claims description 10
- FFNVQNRYTPFDDP-UHFFFAOYSA-N 2-cyanopyridine Chemical compound N#CC1=CC=CC=N1 FFNVQNRYTPFDDP-UHFFFAOYSA-N 0.000 claims description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 125000001188 haloalkyl group Chemical group 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 9
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims description 8
- GZPHSAQLYPIAIN-UHFFFAOYSA-N 3-pyridinecarbonitrile Chemical compound N#CC1=CC=CN=C1 GZPHSAQLYPIAIN-UHFFFAOYSA-N 0.000 claims description 8
- VKJMPYGLTDMUPZ-UHFFFAOYSA-N 5-amino-1h-triazin-6-one Chemical compound NC1=CN=NNC1=O VKJMPYGLTDMUPZ-UHFFFAOYSA-N 0.000 claims description 8
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 7
- 125000004076 pyridyl group Chemical group 0.000 claims description 7
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 6
- 229910000564 Raney nickel Inorganic materials 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 6
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 125000001424 substituent group Chemical group 0.000 claims description 5
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000007868 Raney catalyst Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 125000004400 (C1-C12) alkyl group Chemical group 0.000 claims description 3
- NYEPBMRXVGDUEZ-UHFFFAOYSA-N 5-acetyl-1h-triazin-6-one Chemical compound CC(=O)C1=CN=NNC1=O NYEPBMRXVGDUEZ-UHFFFAOYSA-N 0.000 claims description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 3
- 239000012429 reaction media Substances 0.000 claims description 3
- 125000004455 (C1-C3) alkylthio group Chemical group 0.000 claims description 2
- 125000000171 (C1-C6) haloalkyl group Chemical group 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 2
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 claims description 2
- 150000003138 primary alcohols Chemical class 0.000 claims description 2
- 238000006722 reduction reaction Methods 0.000 claims description 2
- 150000003333 secondary alcohols Chemical class 0.000 claims description 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims description 2
- 150000003509 tertiary alcohols Chemical class 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims 2
- 125000002837 carbocyclic group Chemical group 0.000 claims 2
- 125000004191 (C1-C6) alkoxy group Chemical group 0.000 claims 1
- 125000006555 (C3-C5) cycloalkyl group Chemical group 0.000 claims 1
- 125000001475 halogen functional group Chemical group 0.000 claims 1
- 238000010992 reflux Methods 0.000 claims 1
- 239000002917 insecticide Substances 0.000 abstract description 2
- 239000000543 intermediate Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 23
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000011541 reaction mixture Substances 0.000 description 12
- 229910052759 nickel Inorganic materials 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- FIFXOUHQMGZUTO-UHFFFAOYSA-N 4-amino-6-methyl-2,5-dihydro-1,2,4-triazin-3-one Chemical compound CC1=NNC(=O)N(N)C1 FIFXOUHQMGZUTO-UHFFFAOYSA-N 0.000 description 7
- VSMQHCXCTMWZGY-UHFFFAOYSA-N 4-amino-6-methyl-2,5-dihydro-1,2,4-triazin-3-one;hydrochloride Chemical compound Cl.CC1=NNC(=O)N(N)C1 VSMQHCXCTMWZGY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000001212 derivatisation Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 150000001735 carboxylic acids Chemical group 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- NCSCAWXVGUIUEY-UHFFFAOYSA-N n-(6-methyl-3-oxo-2,5-dihydro-1,2,4-triazin-4-yl)acetamide Chemical compound CC(=O)NN1CC(C)=NNC1=O NCSCAWXVGUIUEY-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- QHMTXANCGGJZRX-UHFFFAOYSA-N 6-methyl-4-(pyridin-3-ylmethylideneamino)-2,5-dihydro-1,2,4-triazin-3-one Chemical compound C1C(C)=NNC(=O)N1N=CC1=CC=CN=C1 QHMTXANCGGJZRX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- IFLRITVIVMSVTL-UHFFFAOYSA-N 4-amino-2,5-dihydro-1,2,4-triazin-3-one Chemical class NN1CC=NNC1=O IFLRITVIVMSVTL-UHFFFAOYSA-N 0.000 description 1
- PFNTVCXZEZYYQE-UHFFFAOYSA-N 4-amino-6-methyl-2,5-dihydro-1,2,4-triazin-3-one;5-amino-1h-triazin-6-one Chemical compound NC1=CN=NNC1=O.CC1=NNC(=O)N(N)C1 PFNTVCXZEZYYQE-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- HDOUGSFASVGDCS-UHFFFAOYSA-N pyridin-3-ylmethanamine Chemical compound NCC1=CC=CN=C1 HDOUGSFASVGDCS-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D253/00—Heterocyclic compounds containing six-membered rings having three nitrogen atoms as the only ring hetero atoms, not provided for by group C07D251/00
- C07D253/02—Heterocyclic compounds containing six-membered rings having three nitrogen atoms as the only ring hetero atoms, not provided for by group C07D251/00 not condensed with other rings
- C07D253/06—1,2,4-Triazines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4069193A | 1993-03-31 | 1993-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SK36694A3 true SK36694A3 (en) | 1995-02-08 |
Family
ID=21912393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SK366-94A SK36694A3 (en) | 1993-03-31 | 1994-03-28 | Method of preparation of aminotriazine derivatives |
Country Status (20)
| Country | Link |
|---|---|
| US (2) | US5384403A (de) |
| EP (1) | EP0618200B1 (de) |
| JP (1) | JP3668899B2 (de) |
| KR (2) | KR100306200B1 (de) |
| CN (2) | CN1144802C (de) |
| AT (1) | ATE157971T1 (de) |
| AU (1) | AU689459B2 (de) |
| BR (1) | BR9401346A (de) |
| CA (1) | CA2120164C (de) |
| CZ (2) | CZ287169B6 (de) |
| DE (1) | DE69405439T2 (de) |
| DK (1) | DK0618200T3 (de) |
| ES (1) | ES2110206T3 (de) |
| HU (1) | HU214018B (de) |
| IL (1) | IL109116A (de) |
| NZ (2) | NZ260211A (de) |
| PH (1) | PH30984A (de) |
| PL (1) | PL185421B1 (de) |
| SG (1) | SG46219A1 (de) |
| SK (1) | SK36694A3 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9304191D0 (en) * | 1993-03-02 | 1993-04-21 | Ciba Geigy Ag | Process for the preparation of aqueous nicotinaldehyde |
| CO5210907A1 (es) * | 1999-05-12 | 2002-10-30 | Novartis Ag | Solvatos de pometrozina, insecticidamente activos, composiciones que contienen estos compuestos y metodos tanto para producir dichos compuestos y composiciones como para controlar plagas animales con estas composiciones |
| JP2006213674A (ja) * | 2005-02-07 | 2006-08-17 | Ube Ind Ltd | 4−ホルミルテトラヒドロピラン化合物の製法 |
| CN102250030B (zh) * | 2010-05-17 | 2013-01-30 | 中国中化股份有限公司 | 一种4-氨基-6-甲基-1,2,4三嗪-3-酮制备方法 |
| JP6063953B2 (ja) | 2011-11-29 | 2017-01-18 | シンジェンタ パーティシペーションズ アーゲー | 殺虫性トリアジノン誘導体 |
| CN112028876B (zh) * | 2020-09-18 | 2021-04-20 | 河北威远生物化工有限公司 | 一种回收吡蚜酮的方法 |
| CN114573561B (zh) * | 2022-03-21 | 2023-07-18 | 中国农业大学 | 含有苄基或杂环取代的三嗪酮类化合物及其制备方法与应用 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE121742T1 (de) * | 1987-10-16 | 1995-05-15 | Ciba Geigy Ag | Schädlingsbekämpfungsmittel. |
| DK0391849T3 (da) * | 1989-04-06 | 1995-06-26 | Ciba Geigy Ag | Pyridyl-methylenamino-1,2,4-triazinoner |
| DE4011740A1 (de) * | 1989-04-14 | 1990-10-18 | Ciba Geigy Ag | 1,2,4-triazinonderivate |
| US5324842A (en) * | 1989-11-15 | 1994-06-28 | Ciba-Geigy Corporation | Process for the preparation of aminotriazine derivatives |
| TW199149B (de) * | 1989-11-15 | 1993-02-01 | Ciba Geigy Ag | |
| GB9304191D0 (en) * | 1993-03-02 | 1993-04-21 | Ciba Geigy Ag | Process for the preparation of aqueous nicotinaldehyde |
-
1994
- 1994-02-09 US US08/194,185 patent/US5384403A/en not_active Expired - Lifetime
- 1994-02-15 PH PH47771A patent/PH30984A/en unknown
- 1994-03-21 PL PL94302711A patent/PL185421B1/pl not_active IP Right Cessation
- 1994-03-22 AT AT94810174T patent/ATE157971T1/de active
- 1994-03-22 ES ES94810174T patent/ES2110206T3/es not_active Expired - Lifetime
- 1994-03-22 DK DK94810174.6T patent/DK0618200T3/da active
- 1994-03-22 SG SG1996001018A patent/SG46219A1/en unknown
- 1994-03-22 DE DE69405439T patent/DE69405439T2/de not_active Expired - Lifetime
- 1994-03-22 EP EP94810174A patent/EP0618200B1/de not_active Expired - Lifetime
- 1994-03-24 IL IL10911694A patent/IL109116A/en not_active IP Right Cessation
- 1994-03-25 KR KR1019940006216A patent/KR100306200B1/ko not_active Expired - Fee Related
- 1994-03-28 SK SK366-94A patent/SK36694A3/sk unknown
- 1994-03-29 CA CA002120164A patent/CA2120164C/en not_active Expired - Fee Related
- 1994-03-29 AU AU59140/94A patent/AU689459B2/en not_active Ceased
- 1994-03-29 CZ CZ1994739A patent/CZ287169B6/cs not_active IP Right Cessation
- 1994-03-29 NZ NZ260211A patent/NZ260211A/en unknown
- 1994-03-29 NZ NZ286194A patent/NZ286194A/en unknown
- 1994-03-29 CN CNB001010360A patent/CN1144802C/zh not_active Expired - Lifetime
- 1994-03-29 CN CN94103768A patent/CN1058713C/zh not_active Expired - Lifetime
- 1994-03-30 JP JP08535094A patent/JP3668899B2/ja not_active Expired - Fee Related
- 1994-03-30 BR BR9401346A patent/BR9401346A/pt not_active IP Right Cessation
- 1994-03-30 HU HU9400917A patent/HU214018B/hu not_active IP Right Cessation
-
1995
- 1995-06-06 US US08/468,507 patent/US5514795A/en not_active Expired - Lifetime
-
1997
- 1997-10-07 CZ CZ19973174A patent/CZ287227B6/cs not_active IP Right Cessation
-
2001
- 2001-02-12 KR KR1020010006700A patent/KR100303593B1/ko not_active Expired - Fee Related
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