Inventor · disambiguated record
Tadashi Hirata
Also filed as: HIRATA TADASHI
21 granted patents·218 citations·filing 1979–1989
94Inventor score
Files withKYOWA HAKKO KOGYO KK21
Top patents by PatentIndex Score
21 records- 0197US4923986ADerivatives of physiologically active substance K-252KYOWA HAKKO KOGYO KK·Filed 1987·Granted May 8, 1990·128 cites·4 claims
- 0279US4335211AProcess for producing optically active cephalosporin analogsKYOWA HAKKO KOGYO KK·Filed 1980·Granted Jun 15, 1982·13 cites·4 claims
- 0375US4708956A3-position halogenated cephalosporin analogs and pharmaceutical compositionsKYOWA HAKKO KOGYO KK·Filed 1986·Granted Nov 24, 1987·14 cites·18 claims
- 0474US4668683ACardiotonic quinazoline derivativesKYOWA HAKKO KOGYO KK·Filed 1986·Granted May 26, 1987·11 cites·7 claims
- 0565US4640919A3-substituted carbacepem compounds having antibacterial effectKYOWA HAKKO KOGYO KK·Filed 1985·Granted Feb 3, 1987·7 cites·3 claims
- 0663US4650869ADX-52-1 compounds and process for preparing the sameKYOWA HAKKO KOGYO KK·Filed 1984·Granted Mar 17, 1987·7 cites·3 claims
- 0761US4946957AAnti-tumor DC-52 derivativesKYOWA HAKKO KOGYO KK·Filed 1989·Granted Aug 7, 1990·4 cites·1 claims
- 0861US4291164ACephalosporin analogs and methods for production thereofKYOWA HAKKO KOGYO KK·Filed 1979·Granted Sep 22, 1981·4 cites·3 claims
- 0958US4316958AProcess for producing optically active cephalosporin analogsKYOWA HAKKO KOGYO KK·Filed 1980·Granted Feb 23, 1982·4 cites·5 claims
- 1056US4343943ACephalosporin analogsKYOWA HAKKO KOGYO KK·Filed 1979·Granted Aug 10, 1982·3 cites·33 claims
- 1153US4332896AProcess for producing cephalosporin analogsKYOWA HAKKO KOGYO KK·Filed 1980·Granted Jun 1, 1982·3 cites·5 claims
- 1253US4322345A2-Azetidinone 4-carboxy derivatives and a process for producing the sameKYOWA HAKKO KOGYO KK·Filed 1980·Granted Mar 30, 1982·3 cites·22 claims
- 1349US4879386AAnti-tumor DC-52 compoundsKYOWA HAKKO KOGYO KK·Filed 1987·Granted Nov 7, 1989·2 cites·1 claims
- 1446US4822882ADC-52 derivatives and their antitumor useKYOWA HAKKO KOGYO KK·Filed 1987·Granted Apr 18, 1989·2 cites·2 claims
- 1543US4694001Aβ-lactam compound and a pharmaceutical composition containing the sameKYOWA HAKKO KOGYO KK·Filed 1984·Granted Sep 15, 1987·2 cites·5 claims
- 1637US4302541AProcess of producing optically active cephalosporin analogs by enzyme selective deacylationKYOWA HAKKO KOGYO KK·Filed 1980·Granted Nov 24, 1981·5 cites·3 claims
- 1736US4302540AProcess of producing optically active cephalosporin analogs by enzyme selective deacylationKYOWA HAKKO KOGYO KK·Filed 1980·Granted Nov 24, 1981·5 cites·4 claims
- 1834US4618687ACyclopentenone compound and process for production thereofKYOWA HAKKO KOGYO KK·Filed 1985·Granted Oct 21, 1986·0 cites·1 claims
- 1932US4663450AOptically active cephalosporin analogsKYOWA HAKKO KOGYO KK·Filed 1985·Granted May 5, 1987·1 cites·5 claims
- 2029US4755596AOptically active carbacephemsKYOWA HAKKO KOGYO KK·Filed 1986·Granted Jul 5, 1988·0 cites·13 claims
- 2129US4734494AOptically active 3-halo carbacephemsKYOWA HAKKO KOGYO KK·Filed 1986·Granted Mar 29, 1988·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →