Inventor · disambiguated record
Michio Sasaoka
Also filed as: SASAOKA MICHIO
54 granted patents·309 citations·filing 1982–1999
98Inventor score
Top patents by PatentIndex Score
54 records- 0196US4898654AMethod of producing optically active β-lactam derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Feb 6, 1990·71 cites·6 claims
- 0293US4784734AAzetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1987·Granted Nov 15, 1988·49 cites·4 claims
- 0378US4689411A4-thio azetidinone intermediates and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1986·Granted Aug 25, 1987·12 cites·3 claims
- 0474US5476913APolymerizable monomer, polymer thereof and process for preparing sameOTSUKA KAGAKU KK·Filed 1993·Granted Dec 19, 1995·14 cites·5 claims
- 0574US4482491AThiazolinoazetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Nov 13, 1984·7 cites·9 claims
- 0672US4912213AProcess for preparing penicillanic acid derivativesOTSUKA KAGAKU KK·Filed 1988·Granted Mar 27, 1990·21 cites·22 claims
- 0769US5070194AMethod for production of β-lactam derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Dec 3, 1991·10 cites·6 claims
- 0866US4925934AProcess for preparation of beta-lactam derivativesOTSUKA KAGAKU KK·Filed 1989·Granted May 15, 1990·18 cites·6 claims
- 0966US4609438AProcess for preparing thiosulfonate derivativesOTSUKA KAGAKU KK·Filed 1984·Granted Sep 2, 1986·15 cites·12 claims
- 1065US5656754AProcess for preparing cephem compoundsOTSUKA KAGAKU KK·Filed 1993·Granted Aug 12, 1997·9 cites·6 claims
- 1165US4604457A2-substituted cephem derivatives and process for preparing the sameOTSUKA KAGAKU KK·Filed 1983·Granted Aug 5, 1986·9 cites·3 claims
- 1260US4566996AProcess for preparing azetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1984·Granted Jan 28, 1986·4 cites·8 claims
- 1359US4853468AProcess for the preparation of cephem derivativesOTSUKA KAGAKU YAKUHIN·Filed 1988·Granted Aug 1, 1989·5 cites·2 claims
- 1458US5204458AProcess for preparing cephem derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Apr 20, 1993·6 cites·1 claims
- 1556US5196530AProcess for preparing 2-exo-methylenepenam derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Mar 23, 1993·5 cites·3 claims
- 1656US4798890AProcess for preparation of azetidinone derivativesOTSUKA KAGAKU KK·Filed 1988·Granted Jan 17, 1989·4 cites·6 claims
- 1755US4499265AProcess for preparing 3-exo-methylenecepham derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Feb 12, 1985·3 cites·18 claims
- 1852US4810788AAzetidinone disulfide derivatives and a process for preparing the sameOTSUKA KAGAKU YAKUHIN·Filed 1987·Granted Mar 7, 1989·3 cites·1 claims
- 1952US4603014AThiazolinoazetidinone derivatives and process for the preparation of the sameOTSUKA KAGAKU YAKUHIN·Filed 1984·Granted Jul 29, 1986·2 cites·33 claims
- 2048US5587464AProcess for producing diazomethane derivativesOTSUKA KAGAKU KK·Filed 1994·Granted Dec 24, 1996·3 cites·18 claims
- 2147US5968335AProcess for preparing 3-alkoxymethylcephem compoundsOTSUKA KAGAKU KK·Filed 1997·Granted Oct 19, 1999·3 cites·2 claims
- 2247US4886891AProcess for preparing 1,1-disubstituted ethylene derivative by reaction of lead with a carbinol derivativeOTSUKA KAGAKU KK·Filed 1987·Granted Dec 12, 1989·3 cites·8 claims
- 2347US4464237AProcess for preparing β-lactam derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Aug 7, 1984·6 cites·8 claims
- 2445US4789740AHalogenation process for preparing 2-(oxoazetidinyl)-3-chloromethyl-3-butenoateOTSUKA KAGAKU YAKUHIN·Filed 1987·Granted Dec 6, 1988·2 cites·12 claims
- 2544US4599151AProcess for preparing 2,2-bishalomethylpenam derivativesOTSUKA KAGAKU KK·Filed 1985·Granted Jul 8, 1986·2 cites·10 claims
- 2643US5126447AProcess 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
- 2743US4665166AProcess for preparing cephalosporin compoundsOTSUKA KAGAKU KK·Filed 1983·Granted May 12, 1987·1 cites·3 claims
- 2842US5770729AOzonide reducing agentOTSUKA KAGAKU KK·Filed 1994·Granted Jun 23, 1998·2 cites·3 claims
- 2940US6043356AProcess for preparing β-lactam compoundOTSUKA KAGAKU KK·Filed 1999·Granted Mar 28, 2000·1 cites·5 claims
- 3037US5929233ACyclization for preparing halo-cephemsOTSUKA KAGAKU KK·Filed 1996·Granted Jul 27, 1999·1 cites·9 claims
- 3136US4958018AMethod for production of 3-exomethylenecepham derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Sep 18, 1990·3 cites·17 claims
- 3236US4629542AProcess for preparing 3-exomethylenecepham derivativesOTSUKA KAGAKU KK·Filed 1985·Granted Dec 16, 1986·2 cites·14 claims
- 3335US5247054AOrganic polymer ferromagnetic material and process for preparing polymerOTSUKA KAGAKU KK·Filed 1990·Granted Sep 21, 1993·4 cites·6 claims
- 3435US4392923AProcess for preparing thiazolinozetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Jul 12, 1983·2 cites·11 claims
- 3533US5905147AProcess for preparing β-lactam compoundOTSUKA KAGAKU KK·Filed 1996·Granted May 18, 1999·0 cites·6 claims
- 3633US4801720AAzetidinone disulfides and a ring opening process for preparing the sameOTSUKA KAGAKU YAKUHIN·Filed 1987·Granted Jan 31, 1989·0 cites·1 claims
- 3732US6197185B1Process for preparing beta lactam compoundOTSUKA KAGAKU KK·Filed 1999·Granted Mar 6, 2001·0 cites·5 claims
- 3832US6150519AProcess for preparing β-lactam derivativesOTSUKA KAGAKU KK·Filed 1999·Granted Nov 21, 2000·0 cites·5 claims
- 3932US6011151AProcess for preparing β-lactam halide compoundOTSUKA KAGAKU KK·Filed 1996·Granted Jan 4, 2000·0 cites·4 claims
- 4032US5656755AProcess for preparation on 3-substituted cephem compoundOTSUKA KAGAKU KK·Filed 1994·Granted Aug 12, 1997·0 cites·7 claims
- 4132US5206361AThiazolinoazetidinone derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Apr 27, 1993·1 cites·1 claims
- 4232US4656264ABicyclic azetidinone intermediatesOTSUKA KAGAKU KK·Filed 1983·Granted Apr 7, 1987·1 cites·16 claims
- 4332US4379032AProcess for preparing oxazolineazetidinone derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Apr 5, 1983·1 cites·10 claims
- 4431US5986091AProcess for preparation of β-lactam compoundsOTSUKA KAGAKU KK·Filed 1996·Granted Nov 16, 1999·0 cites·6 claims
- 4531US5977352AProcess for preparing 3-norcephem compoundsOTSUKA KAGAKU KK·Filed 1997·Granted Nov 2, 1999·0 cites·3 claims
- 4631US4401528AProcess for preparing 2-oxycephalosporin derivativesOTSUKA KAGAKU YAKUHIN·Filed 1982·Granted Aug 30, 1983·0 cites·8 claims
- 4730US5288860AProcess for preparing thiazolino azetidinone and 2-exo-methylenepenam derivativeOTSUKA KAGAKU KASBUSHIKI KAISH·Filed 1993·Granted Feb 22, 1994·2 cites·2 claims
- 4830US5142040AProcess for preparing a 3-formylcephem derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Aug 25, 1992·0 cites·3 claims
- 4929US6063918AProcess for preparing 2-isocephem derivativesOTSUKA KAGAKU KK·Filed 1997·Granted May 16, 2000·0 cites·2 claims
- 5029US4740596AProcess for preparation of 4-sulfonylthio azetidinone derivativesOTSUKA KAGAKU KK·Filed 1987·Granted Apr 26, 1988·0 cites·7 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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