Masahiko Tsujii

Person

Omigawa-machi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for production of sulfoxide derivatives or salts thereof in...
- Patent number 7,754,887
- Issue date Jul 13, 2010
- Eisai R&D Management Co., Ltd.
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Methods for producing cyclic benzamidine derivatives
- Patent number 7,375,236
- Issue date May 20, 2008
- Eisai Co., Ltd.
- Naoyuki Shimomura
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Carbapenem compound crystals and interjection preparations
- Patent number 7,084,268
- Issue date Aug 1, 2006
- Eisai Co., Ltd.
- Hiroyuki Chiba
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Sulfoxide compounds and acetone complexes, and a process for produc...
- Patent number 6,545,024
- Issue date Apr 8, 2003
- Eisai Co., Ltd.
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulfoxide compounds and acetone complexes, and a process for produc...
- Patent number 6,180,652
- Issue date Jan 30, 2001
- Eisai Co., Ltd.
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Protected aminothiazolylacetic acid derivatives
- Patent number 5,665,888
- Issue date Sep 9, 1997
- Eisai Chemical Co., Ltd.
- Yoshio Urawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Protected aminothiazolylacetic acid derivatives
- Patent number 5,650,518
- Issue date Jul 22, 1997
- Eisai Chemical Co., Ltd.
- Yoshio Urawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Protected aminothiazolylacetic acid derivatives
- Patent number 5,631,378
- Issue date May 20, 1997
- Eisai Chemical Co., Ltd.
- Yoshio Urawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification method of crude product
- Patent number 5,547,580
- Issue date Aug 20, 1996
- Eisai Chemical Co., Ltd.
- Masahiko Tsujii
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for purifying secretin
- Patent number 4,533,494
- Issue date Aug 6, 1985
- Eisai Co., Ltd.
- Mikio Uchiyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Heptacosapeptide
- Patent number 4,407,745
- Issue date Oct 4, 1983
- Eisai Co., Ltd.
- Mikio Uchiyama
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
PROCESS FOR PRODUCTION OF SULFOXIDE DERIVATIVES OR SALTS THEREOF IN...
- Publication number 20080214828
- Publication date Sep 4, 2008
- Masahiko TSUJII
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Process for production of sulfoxide derivatives or salts thereof in...
- Publication number 20060178406
- Publication date Aug 10, 2006
- Masahiko Tsujii
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Methods for producing cyclic benzamidine derivatives
- Publication number 20060058370
- Publication date Mar 16, 2006
- Eisai Co., Ltd.
- Naoyuki Shimomura
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Carbapenem compound crystals and injection preparations
- Publication number 20060040916
- Publication date Feb 23, 2006
- EISAI CO., LTD.
- Hiroyuki Chiba
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Process for preparation of carbapenem antibiotics
- Publication number 20040198973
- Publication date Oct 7, 2004
- Tsujii Masahiko
- C07 - ORGANIC CHEMISTRY

Masahiko Tsujii

Person

Patents Grantslast 30 patents

Process for production of sulfoxide derivatives or salts thereof in...

Methods for producing cyclic benzamidine derivatives

Carbapenem compound crystals and interjection preparations

Sulfoxide compounds and acetone complexes, and a process for produc...

Sulfoxide compounds and acetone complexes, and a process for produc...

Protected aminothiazolylacetic acid derivatives

Protected aminothiazolylacetic acid derivatives

Protected aminothiazolylacetic acid derivatives

Purification method of crude product

Process for purifying secretin

Heptacosapeptide

Patents Applicationslast 30 patents

PROCESS FOR PRODUCTION OF SULFOXIDE DERIVATIVES OR SALTS THEREOF IN...

Process for production of sulfoxide derivatives or salts thereof in...

Methods for producing cyclic benzamidine derivatives

Carbapenem compound crystals and injection preparations

Process for preparation of carbapenem antibiotics