Inventor
Tohru Yokozawa
Inventor
Kanagawa, JP
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Fprimary
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium29%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry20%
C07BGeneral methods of organic chemistry20%
C07CAcyclic or carbocyclic compounds17%
C07DHeterocyclic compounds7%
Y02PClimate change mitigation technologies in the production or processing of goods5%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments2%
PatentTitleYear
9,079,931'Ruthenium complex and method for preparing optically active alcohol compound'20158,222,433'Axially asymmetric phosphorus compound and production method thereof'20128,188,307'Method for producing an optically active tetrahydroquinoline'20128,076,503'Process for production of optically active aminophosphinylbutanoic acids'20117,601,842'Method for producing an optically active tetrahydroquinoline'20097,312,347'Substituted optically active disphosphine compound'20076,984,738'Process for production of optically active amino alcohols'20066,794,328'Diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complex'20046,492,545'Process for producing optically active alcohol'20026,472,539'Production process of diphosphine oxide and diphosphonate'20026,333,291'Optically active diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complex'20016,313,317'Ruthenium-phosphine complex and method for producing the same'20015,872,273'Chiral diphosphine compound intermediate for preparing the same transition metal complex having the same diphosphine compound as ligand and asymmetric hydrogenation catalyst'19995,847,222'Optically active diphosphine compound, method for making the compound, transition metal complex having the compound as ligand and method for making optically active substance by use of the complex'19985,808,162'Chiral unsymmetric diphosphine compound and transition metal complex containing the same as ligand'19985,693,868'Method for producing optically active diphosphine compounds'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2015Patents assigned to TAKASAGO PERFUMERY CO LTD (15)· patent assignee history
1997–2015Based in Kanagawa, JP· patent location history
1998–2012Based in Hiratsuka, JP· patent location history
2006–2015Patents assigned to YOKOZAWA TOHRU (5)· patent assignee history
2006–2012Patents assigned to YAGI KENJI (2)· patent assignee history
2006Based in Yokohama-shi, Kanagawa, JP· patent location history
2011–2015Patents assigned to NARA HIDEKI (3)· patent assignee history
2012Patents assigned to HAKAMATA TOMOHIKO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TAKASAGO PERFUMERY CO LTD | 15 | 1997–2015 |
| YOKOZAWA TOHRUself | 5 | 2006–2015 |
| NARA HIDEKI | 3 | 2011–2015 |
| YAGI KENJI | 2 | 2006–2012 |
| HAKAMATA TOMOHIKO | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 8 | 1997–2015 |
| Hiratsuka, JP | 7 | 1998–2012 |
| Yokohama-shi, Kanagawa, JP | 1 | 2006 |