P

Inventor

HAGIWARA TOSHIMITSU

JP59 patents
⚠️ This page may combine multiple inventors who share the name “HAGIWARA TOSHIMITSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TAKASAGO PERFUMERY CO LTD

44 patents
US6083651AJul 4, 2000

Phenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD54 citations96
US5942615AAug 24, 1999

Phenothiazine or phenoxazine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD73 citations96
US6175047B1Jan 16, 2001

Ruthenium metathesis catalyst and method for producing olefin reaction product by metathesis reaction using the same

TAKASAGO PERFUMERY CO LTD52 citations95
US6548711B2Apr 15, 2003

Process for producing 2-vinylcyclododecanone

TAKASAGO PERFUMERY CO LTD29 citations92
US6515188B2Feb 4, 2003

Method for producing 3-l-menthoxypropane-1,2-diol

TAKASAGO PERFUMERY CO LTD28 citations92
US6407293B1Jun 18, 2002

Process for producing 3-1-menthoxypropane-1,2-diol

TAKASAGO PERFUMERY CO LTD32 citations92
US6313365B1Nov 6, 2001

Ruthenium metathesis catalyst and method for producing olefin reaction product by metathesis reaction using the same

TAKASAGO PERFUMERY CO LTD32 citations92
US6172264B1Jan 9, 2001

Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD19 citations92
US5989765ANov 23, 1999

Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD24 citations92
US5824751AOct 20, 1998

Biodegradable high molecular composition

TAKASAGO PERFUMERY CO LTD38 citations92
US5567560AOct 22, 1996

Triphenylamine derivative charge-transporting material containing electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD23 citations92
US7538081B2May 26, 2009

Method and agent for enhancing diffusivity and long-lasting property of fragrance

TAKASAGO PERFUMERY CO LTD19 citations83
US6150065ANov 21, 2000

Electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD16 citations83
US5910610AJun 8, 1999

Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD13 citations82
US4751163AJun 14, 1988

1,1,4,4-tetraphenyl-1,3-butadiene derivative and electrophotographic light-sensitive material using the same

TAKASAGO PERFUMERY CO LTD21 citations81
US5882813AMar 16, 1999

Electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD15 citations74
US5736284AApr 7, 1998

Carbazole derivative charge transporting material using the same and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD10 citations74
US5573878ANov 12, 1996

Triphenylamine derivative, charge-transporting material comprising the same, and electrophotographic photoreceptor

TAKASAGO PERFUMERY CO LTD12 citations74
US5486441AJan 23, 1996

Electrophotographic photoreceptor containing 1,4-bis(4,4-diphenyl-1,3-butadienyl)benzene derivative

TAKASAGO PERFUMERY CO LTD10 citations74
US5229238AJul 20, 1993

Electrophotographic photoreceptor comprising a benzodithiafulvene derivative charge transport material

TAKASAGO PERFUMERY CO LTD11 citations74
US6228547B1May 8, 2001

Bis(3,4-methylenedioxyphenylamino) derivatives and electrophotographic photoreceptor containing the derivatives

TAKASAGO PERFUMERY CO LTD11 citations73
US6075154AJun 13, 2000

Method of preparation of 2,2'-bis(diarylphosphino)-6,6'-bis(trifluoromethyl)-1,1'-biphenyl, transition metal complex using it as ligand, and optically active 3-hydroxybutanoic acid ester derivative or β-butyrolactone

TAKASAGO PERFUMERY CO LTD15 citations73
US5981771ANov 9, 1999

Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same

TAKASAGO PERFUMERY CO LTD5 citations73
US5840811ANov 24, 1998

Optically active block polyester copolymer and method for production thereof

TAKASAGO PERFUMERY CO LTD10 citations73
US6833481B2Dec 21, 2004

Process for producing 2-alkyl-2cyclopentenones

TAKASAGO PERFUMERY CO LTD7 citations71
US5521042AMay 28, 1996

1,4-bis(2',2'-diphenylvinyl)benzene derivative and charge transporting material and electrophotographic photoreceptor using the same

TAKASAGO PERFUMERY CO LTD2 citations63
US6822121B2Nov 23, 2004

Production process of cyclohexenyl ketones

TAKASAGO PERFUMERY CO LTD6 citations62
US6759557B2Jul 6, 2004

Melanin production inhibitors and skincare products containing such inhibitors

TAKASAGO PERFUMERY CO LTD2 citations62
US6545112B2Apr 8, 2003

Process for producing β-butyrolactone homopolymer or copolymer

TAKASAGO PERFUMERY CO LTD2 citations62
US6489522B2Dec 3, 2002

Process for producing optically active 3,7-dimethyl-6-octenol and process for producing intermediate therefor

TAKASAGO PERFUMERY CO LTD3 citations62
US6455720B1Sep 24, 2002

2,2(diarlyl)vinylphosphine compound, palladium catalyst thereof, and process for producing arylamine, diaryl, or arylalkyne with the catalyst

TAKASAGO PERFUMERY CO LTD5 citations62
US6043380AMar 28, 2000

Ruthenium-I0D0-optically active phosphine complex

TAKASAGO PERFUMERY CO LTD6 citations62
US5981782ANov 9, 1999

Ruthenium-optically active phosphine complex, process for the preparation thereof and process for the preparation of optically active 4-methyl-2-oxetanone using same

TAKASAGO PERFUMERY CO LTD2 citations62
US5820782AOct 13, 1998

Optically active compound and antiferroelectric liquid crystal composition containing the same

TAKASAGO PERFUMERY CO LTD4 citations62
US5716542AFeb 10, 1998

Liquid crystal compound and liquid crystal composition containing the same

TAKASAGO PERFUMERY CO LTD5 citations62
US5631344AMay 20, 1997

Block copolymer of polyesters and polycarbonates and process for preparation thereof

TAKASAGO PERFUMERY CO LTD4 citations62
US5290477AMar 1, 1994

Optically active compound and liquid crystal composition containing the same

TAKASAGO PERFUMERY CO LTD5 citations62
US6570035B2May 27, 2003

Process for producing pivaloyl-acetic acid ester

TAKASAGO PERFUMERY CO LTD2 citations61
US6093345AJul 25, 2000

Optically active compound, liquid crystal composition containing the same, and liquid crystal electro-optic element using the same

TAKASAGO PERFUMERY CO LTD2 citations61
US6323174B1Nov 27, 2001

Diene compound and process for producing the same

TAKASAGO PERFUMERY CO LTD1 citations60
US6239324B1May 29, 2001

Diene compound and process for producing the same

TAKASAGO PERFUMERY CO LTD3 citations60
US5454976AOct 3, 1995

Ferroelectric liquid crystal composition and liquid crystal display device using the same

TAKASAGO PERFUMERY CO LTD2 citations60
US5275756AJan 4, 1994

Fluorine-containing optically active compound and liquid crystal composition containing the same

TAKASAGO PERFUMERY CO LTD4 citations60
US6645254B1Nov 11, 2003

Aromatic bleaching agent composition

TAKASAGO PERFUMERY CO LTD2 citations58

SEMICONDUCTOR ENERGY LAB

4 patents

SHINDENGEN ELECTRIC MFG

1 patent

SHIROYAMA KENICHIRO

1 patent

Showing the top 50 of 59 patents by PatentIndex Score.