TR199700470A2 - Sildenafilin haz�rlanmas� i�in proses. - Google Patents
Sildenafilin haz�rlanmas� i�in proses.Info
- Publication number
- TR199700470A2 TR199700470A2 TR97/00470A TR9700470A TR199700470A2 TR 199700470 A2 TR199700470 A2 TR 199700470A2 TR 97/00470 A TR97/00470 A TR 97/00470A TR 9700470 A TR9700470 A TR 9700470A TR 199700470 A2 TR199700470 A2 TR 199700470A2
- Authority
- TR
- Turkey
- Prior art keywords
- sildenafilin
- rlanmas
- haz
- compound
- formula
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/22—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with hetero atoms directly attached to ring nitrogen atoms
- C07D295/26—Sulfur atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
- C07D241/04—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Endocrinology (AREA)
- Reproductive Health (AREA)
- Urology & Nephrology (AREA)
- Gynecology & Obstetrics (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Plural Heterocyclic Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Steroid Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9612514.1A GB9612514D0 (en) | 1996-06-14 | 1996-06-14 | Novel process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TR199700470A2 true TR199700470A2 (xx) | 1998-01-21 |
Family
ID=10795332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TR97/00470A TR199700470A2 (xx) | 1996-06-14 | 1997-06-05 | Sildenafilin haz�rlanmas� i�in proses. |
Country Status (47)
Families Citing this family (54)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060222647A1 (en) * | 1993-05-27 | 2006-10-05 | Beavo Joseph A | Methods and compositions for modulating the activity of PDE5 |
| US6723719B1 (en) * | 1997-04-25 | 2004-04-20 | Pfizer Inc | Pyrazolopyrimidinones which inhibit type 5 cyclic guanosine 3′,5′—monophosphate phosphodiesterase (cGMP PDE5) for the treatment of sexual dysfunction |
| AU739417B2 (en) * | 1997-05-29 | 2001-10-11 | Mochida Pharmaceutical Co., Ltd. | Therapeutic agent for erection dysfunction |
| US6399618B1 (en) | 1997-07-09 | 2002-06-04 | Cardiome Pharma Corp | Compositions and methods for modulating sexual activity |
| GB9722520D0 (en) | 1997-10-24 | 1997-12-24 | Pfizer Ltd | Compounds |
| SI1049695T1 (en) | 1997-11-12 | 2002-06-30 | Bayer Aktiengesellschaft | 2-phenyl substituted imidazotriazinones as phosphodiesterase inhibitors |
| ATE247117T1 (de) * | 1998-04-20 | 2003-08-15 | Pfizer | Pyrazolopyrimidinone cgmp pde5 inhibitoren zur behandlung von sexualfunktionsstörungen |
| CA2235642C (en) | 1998-05-15 | 2007-11-13 | Torcan Chemical Ltd. | Processes for preparing sildenafil |
| JP4717210B2 (ja) * | 1998-09-04 | 2011-07-06 | オーソ−マクニール・フアーマシユーチカル・インコーポレーテツド | 男性の勃起機能障害の処置のための５−ヘテロシクリルピラゾロ［４，３−ｄ］ピリミジン−７−オン |
| GB9822238D0 (en) * | 1998-10-12 | 1998-12-09 | Pfizer Ltd | Process for preparation of pyrazolo[4,3-D]pyrimidin-7-ones and intermediates thereof |
| GB9823103D0 (en) * | 1998-10-23 | 1998-12-16 | Pfizer Ltd | Pharmaceutically active compounds |
| GB9823101D0 (en) | 1998-10-23 | 1998-12-16 | Pfizer Ltd | Pharmaceutically active compounds |
| GB9823102D0 (en) | 1998-10-23 | 1998-12-16 | Pfizer Ltd | Pharmaceutically active compounds |
| KR100353014B1 (ko) * | 1998-11-11 | 2002-09-18 | 동아제약 주식회사 | 발기부전 치료에 효과를 갖는 피라졸로피리미디논 화합물 |
| US6087362A (en) * | 1999-03-16 | 2000-07-11 | Pentech Pharmaceuticals, Inc. | Apomorphine and sildenafil composition |
| AU5204800A (en) * | 1999-06-21 | 2001-01-09 | Biochemical Pharmaceutical Factory of Zhuhai Sez, The | Process for preparing sildenafil, and troche which comprises sildenafil and apomorphine |
| CN1094492C (zh) * | 1999-06-21 | 2002-11-20 | 杭州神鹰医药化工有限公司 | 西地那非的制备方法 |
| CN1077108C (zh) * | 1999-07-13 | 2002-01-02 | 成都地奥制药集团有限公司 | 用于制备药物昔多芬的前体化合物 |
| WO2001019827A1 (en) * | 1999-09-13 | 2001-03-22 | Cipla Ltd. | A novel process for the synthesis of sildenafil citrate |
| US6075028A (en) * | 1999-09-23 | 2000-06-13 | Graham; Richard | Method of treating Tourette's syndrome and related CNS disorders |
| TWI265925B (en) * | 1999-10-11 | 2006-11-11 | Pfizer | Pyrazolo[4,3-d]pyrimidin-7-ones useful in inhibiting type 5 cyclic guanosine 3',5'-monophosphate phosphodiesterases(cGMP PDE5), process and intermediates for their preparation, their uses and composition comprising them |
| HK1049834A1 (zh) | 1999-10-11 | 2003-05-30 | 辉瑞大药厂 | 用作磷酸二酯酶抑制剂的5-(2-取代的-5-杂环基磺酰基吡啶-3-基)-二氢吡唑并[4，3-d]嘧啶-7-酮类化合物 |
| DE60107248T2 (de) * | 2000-06-22 | 2005-12-01 | Pfizer Inc. | Neues verfahren zur herstellung von pyrazolopyrimidonen |
| GB0015462D0 (en) * | 2000-06-22 | 2000-08-16 | Pfizer Ltd | Novel process for the preparation of pyrazolopyrimidinones |
| US6730786B2 (en) * | 2000-06-22 | 2004-05-04 | Pfizer Inc | Process for the preparation of pyrazolopyrimidinones |
| US6667398B2 (en) | 2000-06-22 | 2003-12-23 | Pfizer Inc | Process for the preparation of pyrazolopyrimidinones |
| US6407259B1 (en) | 2000-07-28 | 2002-06-18 | Pfizer Inc. | Process for the preparation of pyrazoles |
| EP1176142A1 (en) * | 2000-07-28 | 2002-01-30 | Pfizer Inc. | Process for the preparation of pyrazoles |
| EP1176147A1 (en) * | 2000-07-28 | 2002-01-30 | Pfizer Limited | Process for the preparation of pyrazolo[4,3-d]pyrimidin-7-ones and intermediates thereof |
| US6821978B2 (en) | 2000-09-19 | 2004-11-23 | Schering Corporation | Xanthine phosphodiesterase V inhibitors |
| CN1127506C (zh) * | 2001-06-29 | 2003-11-12 | 刘宝顺 | 一种治疗阳痿的新化合物 |
| CN1315835C (zh) * | 2001-08-28 | 2007-05-16 | 先灵公司 | 多环鸟嘌呤磷酸二酯酶v抑制剂 |
| EP1719772A1 (en) | 2002-05-31 | 2006-11-08 | Schering Corporation | Process for preparing xanthine phosphodiesterase v inhibitors and precursors thereof |
| DE10232113A1 (de) | 2002-07-16 | 2004-01-29 | Bayer Ag | Vardenafil Hydrochlorid Trihydrat enthaltende Arzneimittel |
| CN100374441C (zh) | 2003-06-06 | 2008-03-12 | 天津倍方科技发展有限公司 | 二氢吡咯[2，3-d]嘧啶-4-酮衍生物，其制备方法及其制药用途 |
| CN100360531C (zh) * | 2003-12-18 | 2008-01-09 | 中国人民解放军军事医学科学院放射与辐射医学研究所 | 用于预防或治疗阳萎和性冷淡的新吡唑并嘧啶类化合物 |
| EP1779852A3 (en) * | 2004-01-05 | 2007-05-09 | Teva Pharmaceutical Industries Ltd. | Processes for the production of sildenafil base and citrate salt |
| ES2300979T3 (es) | 2004-01-05 | 2008-06-16 | Teva Pharmaceutical Industries Ltd. | Procedimiento para la produccion de sildenafilo base y de su sal citrato. |
| DE102005009240A1 (de) | 2005-03-01 | 2006-09-07 | Bayer Healthcare Ag | Arzneiformen mit verbesserten pharmakokinetischen Eigenschaften |
| CN101563348B (zh) * | 2006-12-21 | 2011-08-24 | 上海特化医药科技有限公司 | 西地那非的制备方法及其中间体 |
| ES2310144B1 (es) | 2007-06-15 | 2010-01-12 | Galenicum Health, S.L. | Intermedios para la preparacion de un inhibidor de la fosfodiesterasa tipo 5. |
| BRPI0823356A2 (pt) | 2008-12-12 | 2015-06-16 | Rhein Siegfried Sa De Cv | Composição de liberação pulsátil de sildenafil e processo para prepará-la |
| MX2010006227A (es) | 2010-06-07 | 2011-12-14 | World Trade Imp Exp Wtie Ag | Nuevos derivados 1,4-diazepanos, inhibidores de pde-5. |
| CN102993205B (zh) * | 2012-12-27 | 2015-04-15 | 华润赛科药业有限责任公司 | 一种高收率制备高纯度西地那非游离碱的纯化方法 |
| CN103044330B (zh) * | 2013-01-14 | 2018-11-13 | 常州亚邦制药有限公司 | 西地那非中间体4-氨基-1-甲基-3-正丙基吡唑-5-甲酰胺的绿色合成新工艺 |
| CN105085526B (zh) * | 2014-05-15 | 2017-08-01 | 重庆圣华曦药业股份有限公司 | 一种改进的西地那非制备方法 |
| CN105753870B (zh) * | 2016-04-01 | 2018-05-22 | 重庆康刻尔制药有限公司 | 一种西地那非杂质f及其制备方法和应用 |
| WO2017168174A1 (en) | 2016-04-02 | 2017-10-05 | N4 Pharma Uk Limited | New pharmaceutical forms of sildenafil |
| CN105837578A (zh) * | 2016-04-05 | 2016-08-10 | 重庆康刻尔制药有限公司 | 一种西地那非杂质d的合成方法 |
| EP3522920A2 (en) | 2016-10-10 | 2019-08-14 | Transgene SA | Immunotherapeutic product and mdsc modulator combination therapy |
| CN113493459B (zh) * | 2020-04-07 | 2022-12-13 | 广州白云山医药集团股份有限公司白云山制药总厂 | Pde5抑制剂化合物及其制备方法和应用 |
| CN112961160A (zh) * | 2021-03-05 | 2021-06-15 | 遂成药业股份有限公司 | 一种西地那非的改良合成工艺 |
| CN113754612B (zh) * | 2021-10-26 | 2023-09-26 | 山东安舜制药有限公司 | 一种西地那非中间体的制备方法 |
| CN119874665B (zh) * | 2025-01-16 | 2025-10-17 | 常州大学 | 一种hi催化制备2-苯基苯并-1,3-硫氧杂环己二烯-4-酮的方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4282361A (en) | 1978-03-16 | 1981-08-04 | Massachusetts Institute Of Technology | Synthesis for 7-alkylamino-3-methylpyrazolo [4,3-d]pyrimidines |
| US4871843A (en) * | 1983-10-18 | 1989-10-03 | Dropic-Societe Civile De Gestion De Droits De Propriete Industrielle | Cyclic benzenesulfonamides, process for their preparation and their use as active substance of pharmaceutical compositions |
| GB9013750D0 (en) * | 1990-06-20 | 1990-08-08 | Pfizer Ltd | Therapeutic agents |
| GB9114760D0 (en) * | 1991-07-09 | 1991-08-28 | Pfizer Ltd | Therapeutic agents |
| GB9311920D0 (en) * | 1993-06-09 | 1993-07-28 | Pfizer Ltd | Therapeutic agents |
| US6723719B1 (en) * | 1997-04-25 | 2004-04-20 | Pfizer Inc | Pyrazolopyrimidinones which inhibit type 5 cyclic guanosine 3′,5′—monophosphate phosphodiesterase (cGMP PDE5) for the treatment of sexual dysfunction |
| US6087368A (en) * | 1998-06-08 | 2000-07-11 | Bristol-Myers Squibb Company | Quinazolinone inhibitors of cGMP phosphodiesterase |
-
1996
- 1996-06-14 GB GBGB9612514.1A patent/GB9612514D0/en active Pending
-
1997
- 1997-05-14 HN HN1997000072A patent/HN1997000072A/es unknown
- 1997-05-30 NO NO972481A patent/NO304551B1/no not_active IP Right Cessation
- 1997-06-02 AP APAP/P/1997/001009A patent/AP717A/en active
- 1997-06-04 ES ES97303832T patent/ES2134051T3/es not_active Expired - Lifetime
- 1997-06-04 EP EP97303832A patent/EP0812845B1/en not_active Expired - Lifetime
- 1997-06-04 AT AT98123740T patent/ATE246194T1/de active
- 1997-06-04 EP EP98123740A patent/EP0916675B1/en not_active Expired - Lifetime
- 1997-06-04 DE DE69700321T patent/DE69700321T2/de not_active Expired - Lifetime
- 1997-06-04 AT AT97303832T patent/ATE182150T1/de active
- 1997-06-04 DK DK97303832T patent/DK0812845T3/da active
- 1997-06-04 DK DK98123740T patent/DK0916675T3/da active
- 1997-06-04 SI SI9730577T patent/SI0916675T1/xx unknown
- 1997-06-04 SI SI9730005T patent/SI0812845T1/xx not_active IP Right Cessation
- 1997-06-04 ES ES98123740T patent/ES2201397T3/es not_active Expired - Lifetime
- 1997-06-04 PT PT98123740T patent/PT916675E/pt unknown
- 1997-06-04 DE DE69723846T patent/DE69723846T2/de not_active Expired - Lifetime
- 1997-06-05 BG BG101569A patent/BG62554B1/bg unknown
- 1997-06-05 TR TR97/00470A patent/TR199700470A2/xx unknown
- 1997-06-05 IL IL12100097A patent/IL121000A/xx not_active IP Right Cessation
- 1997-06-05 IL IL12541197A patent/IL125411A/xx not_active IP Right Cessation
- 1997-06-06 US US08/869,532 patent/US5955611A/en not_active Expired - Lifetime
- 1997-06-10 SK SK1787-2001A patent/SK283897B6/sk not_active IP Right Cessation
- 1997-06-10 SK SK743-97A patent/SK283893B6/sk not_active IP Right Cessation
- 1997-06-10 SK SK1784-2001A patent/SK283895B6/sk not_active IP Right Cessation
- 1997-06-10 SA SA97180124A patent/SA97180124B1/ar unknown
- 1997-06-10 SK SK1783-2001A patent/SK283894B6/sk not_active IP Right Cessation
- 1997-06-10 IS IS4503A patent/IS1922B/is unknown
- 1997-06-10 IN IN1548DE1997 patent/IN187350B/en unknown
- 1997-06-10 SK SK1786-2001A patent/SK283896B6/sk not_active IP Right Cessation
- 1997-06-11 MA MA24655A patent/MA24205A1/fr unknown
- 1997-06-11 TN TNTNSN97102A patent/TNSN97102A1/fr unknown
- 1997-06-11 PE PE1997000483A patent/PE1299A1/es not_active IP Right Cessation
- 1997-06-11 PE PE2001000983A patent/PE20011303A1/es not_active IP Right Cessation
- 1997-06-11 DZ DZ970097A patent/DZ2247A1/fr active
- 1997-06-11 EA EA199700061A patent/EA000102B1/ru not_active IP Right Cessation
- 1997-06-12 CZ CZ19971811A patent/CZ290942B6/cs not_active IP Right Cessation
- 1997-06-12 CA CA002207694A patent/CA2207694C/en not_active Expired - Lifetime
- 1997-06-12 EG EG54097A patent/EG24123A/xx active
- 1997-06-12 AR ARP970102564A patent/AR003401A1/es unknown
- 1997-06-12 UA UA97062802A patent/UA27085C2/uk unknown
- 1997-06-12 SG SG1997002037A patent/SG50024A1/en unknown
- 1997-06-12 ID IDP972004A patent/ID18745A/id unknown
- 1997-06-13 CN CN97113261A patent/CN1106399C/zh not_active Expired - Lifetime
- 1997-06-13 CO CO97032741A patent/CO4780028A1/es unknown
- 1997-06-13 RS YUP-254/97A patent/RS49653B/sr unknown
- 1997-06-13 KR KR1019970024457A patent/KR100207352B1/ko not_active Expired - Fee Related
- 1997-06-13 NZ NZ328084A patent/NZ328084A/en not_active IP Right Cessation
- 1997-06-13 RS YUP-2006/0484A patent/RS49924B/sr unknown
- 1997-06-13 MX MX9704433A patent/MX9704433A/es unknown
- 1997-06-13 ZA ZA9705259A patent/ZA975259B/xx unknown
- 1997-06-13 AU AU24878/97A patent/AU697684B2/en not_active Ceased
- 1997-06-13 HU HU9701048A patent/HU224497B1/hu not_active IP Right Cessation
- 1997-06-13 HR HR970326A patent/HRP970326B1/xx not_active IP Right Cessation
- 1997-06-13 PL PL97320555A patent/PL189333B1/pl not_active IP Right Cessation
- 1997-06-13 JP JP9156422A patent/JP2866841B2/ja not_active Expired - Lifetime
- 1997-06-13 OA OA70024A patent/OA10426A/en unknown
- 1997-06-13 UY UY24585A patent/UY24585A1/es not_active IP Right Cessation
- 1997-06-16 BR BR9703580A patent/BR9703580A/pt not_active IP Right Cessation
- 1997-07-09 UY UY24612A patent/UY24612A1/es not_active IP Right Cessation
-
1998
- 1998-07-20 IL IL12541198A patent/IL125411A0/xx unknown
- 1998-09-25 JP JP10271067A patent/JP3058863B2/ja not_active Expired - Lifetime
- 1998-10-30 NO NO985064A patent/NO306115B1/no not_active IP Right Cessation
-
1999
- 1999-07-23 US US09/360,128 patent/US6066735A/en not_active Expired - Lifetime
- 1999-08-26 GR GR990402170T patent/GR3031087T3/el unknown
-
2000
- 2000-07-05 CN CNB001200542A patent/CN1149206C/zh not_active Expired - Lifetime
-
2001
- 2001-04-24 IN IN520DE2001 patent/IN187320B/en unknown
- 2001-04-24 IN IN519DE2001 patent/IN187319B/en unknown
- 2001-04-24 IN IN517DE2001 patent/IN187317B/en unknown
- 2001-04-24 IN IN518DE2001 patent/IN187318B/en unknown
-
2002
- 2002-11-25 IS IS6634A patent/IS1923B/is unknown
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