47 Utility Patents
#1,923 in Tokyo
#8,647 in Japan
#42,402 in the World
Forward Citations = 104
Company Filing History:

Dowa Electronics Materials Co., Ltd.
Dowa Mining Co., Ltd.
4. 3 out of 7,878

5. 3 out of 1,305

where one patent can have more than one assignee
Get your Inventor Badge Today