P

Inventor

SASAOKA MICHIO

JP54 patents
⚠️ This page may combine multiple inventors who share the name “SASAOKA MICHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OTSUKA KAGAKU KK

35 patents
US4898654AFeb 6, 1990

Method of producing optically active β-lactam derivatives

OTSUKA KAGAKU KK71 citations96
US4912213AMar 27, 1990

Process for preparing penicillanic acid derivatives

OTSUKA KAGAKU KK21 citations81
US5656754AAug 12, 1997

Process for preparing cephem compounds

OTSUKA KAGAKU KK9 citations73
US5476913ADec 19, 1995

Polymerizable monomer, polymer thereof and process for preparing same

OTSUKA KAGAKU KK14 citations72
US4609438ASep 2, 1986

Process for preparing thiosulfonate derivatives

OTSUKA KAGAKU KK15 citations72
US4604457AAug 5, 1986

2-substituted cephem derivatives and process for preparing the same

OTSUKA KAGAKU KK9 citations72
US4925934AMay 15, 1990

Process for preparation of beta-lactam derivatives

OTSUKA KAGAKU KK18 citations71
US5070194ADec 3, 1991

Method for production of β-lactam derivatives

OTSUKA KAGAKU KK10 citations70
US5968335AOct 19, 1999

Process for preparing 3-alkoxymethylcephem compounds

OTSUKA KAGAKU KK3 citations63
US5770729AJun 23, 1998

Ozonide reducing agent

OTSUKA KAGAKU KK2 citations63
US5204458AApr 20, 1993

Process for preparing cephem derivatives

OTSUKA KAGAKU KK6 citations63
US5196530AMar 23, 1993

Process for preparing 2-exo-methylenepenam derivatives

OTSUKA KAGAKU KK5 citations63
US5126447AJun 30, 1992

Process for preparation of β-lactam derivative from an alkenyl substituted β-lactam derivative using a ruthenium or rhenium catalyst and a periodic acid

OTSUKA KAGAKU KK2 citations63
US4798890AJan 17, 1989

Process for preparation of azetidinone derivatives

OTSUKA KAGAKU KK4 citations63
US4629542ADec 16, 1986

Process for preparing 3-exomethylenecepham derivatives

OTSUKA KAGAKU KK2 citations63
US5587464ADec 24, 1996

Process for producing diazomethane derivatives

OTSUKA KAGAKU KK3 citations62
US4958018ASep 18, 1990

Method for production of 3-exomethylenecepham derivatives

OTSUKA KAGAKU KK3 citations62
US4886891ADec 12, 1989

Process for preparing 1,1-disubstituted ethylene derivative by reaction of lead with a carbinol derivative

OTSUKA KAGAKU KK3 citations62
US4599151AJul 8, 1986

Process for preparing 2,2-bishalomethylpenam derivatives

OTSUKA KAGAKU KK2 citations61
US5247054ASep 21, 1993

Organic polymer ferromagnetic material and process for preparing polymer

OTSUKA KAGAKU KK4 citations57
US6043356AMar 28, 2000

Process for preparing β-lactam compound

OTSUKA KAGAKU KK1 citations52
US6011151AJan 4, 2000

Process for preparing β-lactam halide compound

OTSUKA KAGAKU KK0 citations52
US5977352ANov 2, 1999

Process for preparing 3-norcephem compounds

OTSUKA KAGAKU KK0 citations52
US5905147AMay 18, 1999

Process for preparing β-lactam compound

OTSUKA KAGAKU KK0 citations52
US5206361AApr 27, 1993

Thiazolinoazetidinone derivative

OTSUKA KAGAKU KK1 citations52
US5142040AAug 25, 1992

Process for preparing a 3-formylcephem derivative

OTSUKA KAGAKU KK0 citations52
US4665166AMay 12, 1987

Process for preparing cephalosporin compounds

OTSUKA KAGAKU KK1 citations51
US4656264AApr 7, 1987

Bicyclic azetidinone intermediates

OTSUKA KAGAKU KK1 citations51
US6150519ANov 21, 2000

Process for preparing β-lactam derivatives

OTSUKA KAGAKU KK0 citations50
US5929233AJul 27, 1999

Cyclization for preparing halo-cephems

OTSUKA KAGAKU KK1 citations50
US5919924AJul 6, 1999

Process for preparing 3-halogenated cephem derivative

OTSUKA KAGAKU KK0 citations48
US6063918AMay 16, 2000

Process for preparing 2-isocephem derivatives

OTSUKA KAGAKU KK0 citations47
US5688942ANov 18, 1997

Process for preparing 2-isocephem derivatives

OTSUKA KAGAKU KK0 citations47
US6197185B1Mar 6, 2001

Process for preparing beta lactam compound

OTSUKA KAGAKU KK0 citations42
US5986091ANov 16, 1999

Process for preparation of β-lactam compounds

OTSUKA KAGAKU KK0 citations42

OTSUKA KAGAKU YAKUHIN

14 patents
US4784734ANov 15, 1988

Azetidinone derivatives and process for the preparation of the same

OTSUKA KAGAKU YAKUHIN49 citations92
US4689411AAug 25, 1987

4-thio azetidinone intermediates and process for the preparation of the same

OTSUKA KAGAKU YAKUHIN12 citations73
US4482491ANov 13, 1984

Thiazolinoazetidinone derivatives and process for the preparation of the same

OTSUKA KAGAKU YAKUHIN7 citations73
US4853468AAug 1, 1989

Process for the preparation of cephem derivatives

OTSUKA KAGAKU YAKUHIN5 citations62
US4603014AJul 29, 1986

Thiazolinoazetidinone derivatives and process for the preparation of the same

OTSUKA KAGAKU YAKUHIN2 citations62
US4566996AJan 28, 1986

Process for preparing azetidinone derivatives

OTSUKA KAGAKU YAKUHIN4 citations62
US4499265AFeb 12, 1985

Process for preparing 3-exo-methylenecepham derivatives

OTSUKA KAGAKU YAKUHIN3 citations62
US4464237AAug 7, 1984

Process for preparing β-lactam derivatives

OTSUKA KAGAKU YAKUHIN6 citations62
US4392923AJul 12, 1983

Process for preparing thiazolinozetidinone derivatives

OTSUKA KAGAKU YAKUHIN2 citations62
US4789740ADec 6, 1988

Halogenation process for preparing 2-(oxoazetidinyl)-3-chloromethyl-3-butenoate

OTSUKA KAGAKU YAKUHIN2 citations61
US4810788AMar 7, 1989

Azetidinone disulfide derivatives and a process for preparing the same

OTSUKA KAGAKU YAKUHIN3 citations60
US4401528AAug 30, 1983

Process for preparing 2-oxycephalosporin derivatives

OTSUKA KAGAKU YAKUHIN0 citations52
US4379032AApr 5, 1983

Process for preparing oxazolineazetidinone derivatives

OTSUKA KAGAKU YAKUHIN1 citations52
US4801720AJan 31, 1989

Azetidinone disulfides and a ring opening process for preparing the same

OTSUKA KAGAKU YAKUHIN0 citations50

OTSUKA KAGAKU KASBUSHIKI KAISH

1 patent

Showing the top 50 of 54 patents by PatentIndex Score.