Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7649025 | Composite ion-exchange membrane | Kota Kitamura, Yoshimitsu Sakaguchi, Shigenori Nagahara, Shiro Hamamoto, Hideki Sugihara +3 more | 2010-01-19 |
| 6878484 | Separator for secondary battery and method for producing the same | Toshio Tanaka, Hiroki Yamaguchi, Masahiro Yamashita | 2005-04-12 |
| 6821680 | Battery separator, process for producing the same, and alkaline battery | Toshio Tanaka, Hiroki Yamaguchi, Masahiro Yamashita, Shiro Hamamoto | 2004-11-23 |
| 6403265 | Battery separator, process for producing the same, and alkaline battery | Toshio Tanaka, Hiroki Yamaguchi, Masahiro Yamashita, Shiro Hamamoto | 2002-06-11 |