Yoshihisa Oka

Person

Chigasaki-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Production method of N-vinyl-2-pyrrolidone
- Patent number 9,096,516
- Issue date Aug 4, 2015
- Nippon Shokubai Co., Ltd.
- Hideto Sugiura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for production of aziridines and N-vinylamides
- Patent number 6,924,378
- Issue date Aug 2, 2005
- Nippon Shokubai Co., Ltd.
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Processes for the preparation of aziridine compounds and vapor-phas...
- Patent number 6,566,534
- Issue date May 20, 2003
- Nippon Shokubai Co., Ltd.
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Washing method for distillation system of nitrogen-containing polym...
- Patent number 6,550,485
- Issue date Apr 22, 2003
- Nippon Shokubai Co., Ltd.
- Yoshihisa Oka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for exchange of catalysts
- Patent number 6,514,908
- Issue date Feb 4, 2003
- Nippon Shokubai Co Ltd
- Yukihiko Kakimoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for production of high-purity monoethylene glycol
- Patent number 6,437,199
- Issue date Aug 20, 2002
- Nippon Shokubai Co., Ltd.
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for production of ethylene glycol
- Patent number 6,417,411
- Issue date Jul 9, 2002
- Nippon Shokubai Co., Ltd.
- Yukihiko Kakimoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process of manufacturing ethylene oxide
- Patent number 6,300,507
- Issue date Oct 9, 2001
- Nippon Shukubai Co Ltd
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PRODUCTION METHOD OF N-VINYL-2-PYRROLIDONE
- Publication number 20110218344
- Publication date Sep 8, 2011
- Nippon Shokubai Co., Ltd.
- Hideto SUGIURA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Production Method of N-Vinyl-2-Pyrrolidone
- Publication number 20090088579
- Publication date Apr 2, 2009
- NIPPON SHOKUBAI CO., LTD
- Hideto Sugiura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Method for production of aziridines and N-vinylamides
- Publication number 20030204098
- Publication date Oct 30, 2003
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Processes for the preparation of aziridine compounds and vapor-phas...
- Publication number 20020055642
- Publication date May 9, 2002
- NIPPON SHOKUBAI CO., LTD.
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Washing method for distillation system of nitrogen-containing polym...
- Publication number 20020040725
- Publication date Apr 11, 2002
- NIPPON SHOKUBAI CO., LTD.
- Yoshihisa Oka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method for production of ethylene oxide
- Publication number 20020010378
- Publication date Jan 24, 2002
- Yukihiko Kakimoto
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process of manufacturing ethylene oxide
- Publication number 20010007035
- Publication date Jul 5, 2001
- NIPPON SHOKUBAI CO., LTD.
- Yoshihisa Oka
- C07 - ORGANIC CHEMISTRY

Yoshihisa Oka

Person

Patents Grantslast 30 patents

Production method of N-vinyl-2-pyrrolidone

Method for production of aziridines and N-vinylamides

Processes for the preparation of aziridine compounds and vapor-phas...

Washing method for distillation system of nitrogen-containing polym...

Method for exchange of catalysts

Method for production of high-purity monoethylene glycol

Method for production of ethylene glycol

Process of manufacturing ethylene oxide

Patents Applicationslast 30 patents

PRODUCTION METHOD OF N-VINYL-2-PYRROLIDONE

Production Method of N-Vinyl-2-Pyrrolidone

Method for production of aziridines and N-vinylamides

Processes for the preparation of aziridine compounds and vapor-phas...

Washing method for distillation system of nitrogen-containing polym...

Method for production of ethylene oxide

Process of manufacturing ethylene oxide