Inventor · disambiguated record
Takashi Shiroi
Also filed as: SHIROI TAKASHI
32 granted patents·1 pending application·317 citations·filing 1982–2002
96Inventor score
Top patents by PatentIndex Score
33 records- 0196US5693792Aβ-lactam and cephem compounds and processes for their productionOTSUKA KAGAKU KK·Filed 1995·Granted Dec 2, 1997·136 cites·1 claims
- 0293US4784734AAzetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1987·Granted Nov 15, 1988·49 cites·4 claims
- 0384US5599925APenam derivativesOTSUKA KAGAKU KK·Filed 1994·Granted Feb 4, 1997·29 cites·3 claims
- 0478US4689411A4-thio azetidinone intermediates and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1986·Granted Aug 25, 1987·12 cites·3 claims
- 0574US4482491AThiazolinoazetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Nov 13, 1984·7 cites·9 claims
- 0669US5070194AMethod for production of β-lactam derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Dec 3, 1991·10 cites·6 claims
- 0765US5656754AProcess for preparing cephem compoundsOTSUKA KAGAKU KK·Filed 1993·Granted Aug 12, 1997·9 cites·6 claims
- 0865US4604457A2-substituted cephem derivatives and process for preparing the sameOTSUKA KAGAKU KK·Filed 1983·Granted Aug 5, 1986·9 cites·3 claims
- 0960US4566996AProcess for preparing azetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1984·Granted Jan 28, 1986·4 cites·8 claims
- 1060US4532077AThiazolineazetidinone-type compoundsOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Jul 30, 1985·4 cites·2 claims
- 1158US5204458AProcess for preparing cephem derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Apr 20, 1993·6 cites·1 claims
- 1256US5196530AProcess for preparing 2-exo-methylenepenam derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Mar 23, 1993·5 cites·3 claims
- 1356US4798890AProcess for preparation of azetidinone derivativesOTSUKA KAGAKU KK·Filed 1988·Granted Jan 17, 1989·4 cites·6 claims
- 1455US4499265AProcess for preparing 3-exo-methylenecepham derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Feb 12, 1985·3 cites·18 claims
- 1552US4603014AThiazolinoazetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1984·Granted Jul 29, 1986·2 cites·33 claims
- 1650US5470972AProcess for preparing examethylenecephem compoundsOTSUKA KAGAKU KK·Filed 1993·Granted Nov 28, 1995·3 cites·3 claims
- 1747US4464237AProcess for preparing β-lactam derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Aug 7, 1984·6 cites·8 claims
- 1844US4599151AProcess for preparing 2,2-bishalomethylpenam derivativesOTSUKA KAGAKU KK·Filed 1985·Granted Jul 8, 1986·2 cites·10 claims
- 1943US5126447AProcess for preparation of β-lactam derivative from an alkenyl substituted β-lactam derivative using a ruthenium or rhenium catalyst and a periodic acidOTSUKA KAGAKU KK·Filed 1991·Granted Jun 30, 1992·2 cites·13 claims
- 2043US4665166AProcess for preparing cephalosporin compoundsOTSUKA KAGAKU KK·Filed 1983·Granted May 12, 1987·1 cites·3 claims
- 2142US5770729AOzonide reducing agentOTSUKA KAGAKU KK·Filed 1994·Granted Jun 23, 1998·2 cites·3 claims
- 2239US2002099206A1Cephalosporin crystals and process for their preparationFiled 2002·Application pending·0 cites
- 2336US4958018AMethod for production of 3-exomethylenecepham derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Sep 18, 1990·3 cites·17 claims
- 2435US4482435AProcess for preparing thiazolidine compoundsOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Nov 13, 1984·2 cites·16 claims
- 2535US4392923AProcess for preparing thiazolinozetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Jul 12, 1983·2 cites·11 claims
- 2632US5656755AProcess for preparation on 3-substituted cephem compoundOTSUKA KAGAKU KK·Filed 1994·Granted Aug 12, 1997·0 cites·7 claims
- 2732US5206361AThiazolinoazetidinone derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Apr 27, 1993·1 cites·1 claims
- 2832US4656264ABicyclic azetidinone intermediatesOTSUKA KAGAKU KK·Filed 1983·Granted Apr 7, 1987·1 cites·16 claims
- 2932US4379032AProcess for preparing oxazolineazetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Apr 5, 1983·1 cites·10 claims
- 3031US4401528AProcess for preparing 2-oxycephalosporin derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Aug 30, 1983·0 cites·8 claims
- 3130US5288860AProcess for preparing thiazolino azetidinone and 2-exo-methylenepenam derivativeOTSUKA KAGAKU KASBUSHIKI KAISH·Filed 1993·Granted Feb 22, 1994·2 cites·2 claims
- 3230US5142040AProcess for preparing a 3-formylcephem derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Aug 25, 1992·0 cites·3 claims
- 3329US4622178AProcess for preparing azetidinone derivativesOTSUKA KAGAKU KK·Filed 1983·Granted Nov 11, 1986·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →