Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE41203 | Alkaline battery separator and process for producing the same | Masanao Tanaka, Toshiaki Takase | 2010-04-06 |
| 6607859 | Alkaline battery separator and process for producing the same | Masanao Tanaka, Toshiaki Takase | 2003-08-19 |
| 6348286 | Alkaline battery separator and process for producing the same | Masanao Tanaka, Kazuya Sato, Koichi Kato, Yasuhiro Ito, Hiroaki Yamazaki +1 more | 2002-02-19 |
| 5290645 | Battery separator and a battery | Masanao Tanaka, Nobutoshi Tokutake, Yoshihiko Kondo, Hiroaki Yamazaki, Koji Kimura | 1994-03-01 |
| 4699858 | Separator for an alkaline battery | Etsurou Nakao, Hiroaki Yamazaki | 1987-10-13 |