Youji Shimizu

Follow

Person

Kyoto, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Divinyl compounds and chromogenic recording-material prepared by us...
- Patent number 4,835,291
- Issue date May 30, 1989
- Yamada Chemical Co., Ltd.
- Hajime Kawai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Divinyl compounds and chromogenic recording-material prepared by us...
- Patent number 4,808,567
- Issue date Feb 28, 1989
- Yamada Chemical Co., Ltd.
- Hajime Kawai
- C07 - ORGANIC CHEMISTRY