Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6607859 | Alkaline battery separator and process for producing the same | Masanao Tanaka, Masaki Hirooka | 2003-08-19 |
| 6586137 | Battery separator | Masanao Tanaka, Hiroaki Yamazaki, Yoshihiko Kondo, Keisuke Takahashi, Shinji Oota | 2003-07-01 |