Inventor · disambiguated record
Takashi Kamiya
Also filed as: GOTO JIRO · HASHIMOTO MASASHI · HEMMI KEIJI · KAMIYA TAKASHI
69 granted patents·646 citations·filing 1973–1996
99Inventor score
Top patents by PatentIndex Score
69 records- 0197US4576753AAzetidinone compounds and processes for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1984·Granted Mar 18, 1986·73 cites·3 claims
- 0296US4304718A2-Azetidinone compounds and processes for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted Dec 8, 1981·45 cites·4 claims
- 0395US4472309A2-Azetidinone compounds and processes for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1981·Granted Sep 18, 1984·40 cites·4 claims
- 0494US4267176AAmino or acylamino-substituted pyrimidinyl cephalosporanic acid derivatives and pharmaceutical compositions thereofFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted May 12, 1981·25 cites·25 claims
- 0593US4207234A4-Unsubstituted azetidinone derivatives and process for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Jun 10, 1980·29 cites·4 claims
- 0692US4206156AHydroxyaminohydrocarbonphosphonic acidsFUJISAWA PHARMACEUTICAL CO·Filed 1978·Granted Jun 3, 1980·25 cites·11 claims
- 0791US4299829A2-Lower alkyl-7-substituted-2 or 3-cephem 4-carboxylic acid compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1978·Granted Nov 10, 1981·20 cites·14 claims
- 0891US4181800A2-Azetidinone compounds and processes for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted Jan 1, 1980·27 cites·35 claims
- 0991US3954732APenam and cepham derivatives and preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1973·Granted May 4, 1976·18 cites·19 claims
- 1088US4407798ACephem compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1981·Granted Oct 4, 1983·19 cites·13 claims
- 1187US4110338AProduct and preparation of 1H-tetrazole-5-thiol derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1974·Granted Aug 29, 1978·16 cites·7 claims
- 1285US4748171ACephem compounds having at the 3-position a (1,4-methylene-1-piperidinio)methyl group or a (1-quinuclidinio)methyl groupEISAI CO LTD·Filed 1986·Granted May 31, 1988·15 cites·9 claims
- 1385US4152433A2-Lower alkyl-7-substituted-2 or 3-cephem-4-carboxylic acid compounds and pharmaceutical compositionsFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted May 1, 1979·12 cites·21 claims
- 1485US3993646AProcess for the ring expansion of penicillins to cephalosporin compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1974·Granted Nov 23, 1976·10 cites·17 claims
- 1584US4218374APenam derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted Aug 19, 1980·11 cites·4 claims
- 1684US4214094ASubstituted-phenyl substituted-alkyl ethers and the preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Jul 22, 1980·12 cites·45 claims
- 1782US5453497AProcess for producing N4 -acyl-5'-deoxy-5-fluorocytidine compoundsHOFFMANN LA ROCHE·Filed 1993·Granted Sep 26, 1995·47 cites·1 claims
- 1882US4546176A7-Carboxymethoxyphenylacetamido-3-cephem derivatives and antibacterial preparations containing the sameEISAI CO LTD·Filed 1983·Granted Oct 8, 1985·13 cites·14 claims
- 1982US4009159AHalogenated penam derivatives and the preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1973·Granted Feb 22, 1977·8 cites·18 claims
- 2081US4305937A2-Lower alkyl-7-substituted-2 or 3-cephem-4-carboxylic acid compounds and antibacterial pharmaceutical compositions containing themFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted Dec 15, 1981·16 cites·9 claims
- 2175US4164497A2-Substituted penam derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1978·Granted Aug 14, 1979·7 cites·12 claims
- 2274US4084049ACepham derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted Apr 11, 1978·7 cites·11 claims
- 2372US5010188ACephem derivativesEISAI CO LTD·Filed 1988·Granted Apr 23, 1991·7 cites·9 claims
- 2472US4191762A2-Lower alkyl-7-substituted amino-2 or 3-cephem-4-carboxylic acid compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Mar 4, 1980·6 cites·13 claims
- 2572US4077965AAminoalkyl- or hydroxyalkyl-substituted thiadiazole derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1974·Granted Mar 7, 1978·7 cites·11 claims
- 2671US4172198A7-(N-substituted-2-phenylglycinamido)-3-substituted-3-cephem-4-carboxylic acid compounds and preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Oct 23, 1979·5 cites·23 claims
- 2770US4113940A7-amino 2-lower alkyl-2 or 3-cephem-4-carboxylic acid derivatives and processes for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1975·Granted Sep 12, 1978·6 cites·5 claims
- 2869US4440766A3,7-Disubstituted-3-cephem-4-carboxylic acid compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1981·Granted Apr 3, 1984·6 cites·14 claims
- 2969US4203897APenam derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted May 20, 1980·5 cites·4 claims
- 3069US4182758AHydroxyaminohydrocarbonphosphonic acid derivatives and use thereof as an antibioticFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Jan 8, 1980·9 cites·61 claims
- 3168US4056521APenam and cepham derivatives and preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted Nov 1, 1977·4 cites·6 claims
- 3265US4921850A3-propenylcephem derivativeEISAI CO LTD·Filed 1987·Granted May 1, 1990·5 cites·11 claims
- 3364US4698336A3-(pyrrolidinio)methyl-3-cephem derivativesEISAI CO LTD·Filed 1986·Granted Oct 6, 1987·6 cites·7 claims
- 3464US4288435A3,7-Disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutical antibacterial compositions containing themFUJISAWA PHARMACEUTICAL CO·Filed 1979·Granted Sep 8, 1981·5 cites·30 claims
- 3563US4036847AHalogenated penam derivatives and the preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted Jul 19, 1977·2 cites·3 claims
- 3661US4410458AProcess for providing an oxidized penamFUJISAWA PHARMACEUTICAL CO·Filed 1981·Granted Oct 18, 1983·3 cites·23 claims
- 3761US4091210APreparation of 3-alkyl-3-cephem-4-carboxylic acid compounds from dithio isopropenyl azetidine carboxylic compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted May 23, 1978·4 cites·4 claims
- 3859US4083848AProcess for protecting amino and/or imino groupsFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Apr 11, 1978·3 cites·17 claims
- 3957US4929612AThiadiazolylacetamide cephem derivativesEISAI CO LTD·Filed 1988·Granted May 29, 1990·4 cites·5 claims
- 4057US4385176AProcess for preparation of 2-lower alkyl-2 or 3-cephem-4-carboxylic acid derivativesFUJISAWA PHARMACEUTICAL CO·Filed 1980·Granted May 24, 1983·4 cites·1 claims
- 4157US3984397A2,3-Lower alkylenepenam-3-carboxylic acid derivatives and processes for the preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1975·Granted Oct 5, 1976·3 cites·1 claims
- 4253US6201121B1Process for the preparation of 3-dihalobenzyl-2,4-quinazolinedione derivativesFUJI CHEM IND CO LTD·Filed 1996·Granted Mar 13, 2001·7 cites·9 claims
- 4353US5373000A7Beta-(thiadiazolyl)-2-iminoacetamido-3cephem compoundsEISAI CO LTD·Filed 1992·Granted Dec 13, 1994·4 cites·3 claims
- 4453US4303655A3,7-Disubstituted-3-cephem-4-carboxylic acid compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Dec 1, 1981·8 cites·12 claims
- 4553US4071527ACertain benzothiazole compoundsFUJISAWA PHARMACEUTICAL CO·Filed 1976·Granted Jan 31, 1978·1 cites·18 claims
- 4652US5128465AProcess for the preparation of cephem derivatives and intermediates thereforEISAI CO LTD·Filed 1990·Granted Jul 7, 1992·4 cites·3 claims
- 4752US5008260ACephem derivativesEISAI CO LTD·Filed 1988·Granted Apr 16, 1991·2 cites·10 claims
- 4852US4350692A3,7-Disubstituted-3-cephem-4-carboxylic acidsFUJISAWA PHARMACEUTICAL CO·Filed 1978·Granted Sep 21, 1982·2 cites·9 claims
- 4952US4237305ASubstituted phenylacetic acid compounds and process for preparation thereofFUJISAWA PHARMACEUTICAL CO·Filed 1977·Granted Dec 2, 1980·2 cites·7 claims
- 5050US4435321AAzetidinone 4-disulfidesFUJISAWA PHARMACEUTICAL CO·Filed 1980·Granted Mar 6, 1984·1 cites·8 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →