Ryuko Takeno

Person

Toyama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
4H-1-benzopyran-4-one derivative or its salt, process for producing...
- Patent number 4,954,518
- Issue date Sep 4, 1990
- Toyama Chemical Company, Ltd.
- Shuntaro Takano
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel process for producing a cephalosporin
- Patent number 4,736,026
- Issue date Apr 5, 1988
- Toyama Chemical Co., Ltd.
- Hiroyuki Imaizumi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid d...
- Patent number 4,667,040
- Issue date May 19, 1987
- Toyama Chemical Co., Ltd.
- Hiroshi Sadaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Aminothiazole intermediate for a cephalosporin
- Patent number 4,656,287
- Issue date Apr 7, 1987
- Toyoma Chemical Co., Ltd.
- Hiroyuki Imaizumi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivat...
- Patent number 4,563,534
- Issue date Jan 7, 1986
- Toyama Chemical Co., Ltd.
- Hiroshi Sadaki
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Novel 1-(4-piperidiniobenzyl)-2,3-dioxopiperazine derivatives or ac...
- Patent number 4,477,664
- Issue date Oct 16, 1984
- Toyama Chemical Co., Ltd.
- Takako Hori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...
- Patent number 4,477,666
- Issue date Oct 16, 1984
- Toyama Chemical Co., Ltd.
- Takako Hori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...
- Patent number 4,460,774
- Issue date Jul 17, 1984
- Toyama Chemical Company, Limited
- Takako Hori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives and salts thereof
- Patent number 4,459,407
- Issue date Jul 10, 1984
- Toyama Chemical Co., Ltd.
- Takako Hori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, acid...
- Patent number 4,448,963
- Issue date May 15, 1984
- Toyama Chemical Co., Ltd.
- Takako Hori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...
- Patent number 4,436,921
- Issue date Mar 13, 1984
- Toyama Chemical Co., Ltd.
- Takako Hori
- C07 - ORGANIC CHEMISTRY

Ryuko Takeno

Person

Patents Grantslast 30 patents

4H-1-benzopyran-4-one derivative or its salt, process for producing...

Novel process for producing a cephalosporin

Novel process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid d...

Aminothiazole intermediate for a cephalosporin

Process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivat...

Novel 1-(4-piperidiniobenzyl)-2,3-dioxopiperazine derivatives or ac...

1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...

1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...

1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives and salts thereof

4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, acid...

1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition sa...