Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 5738788 | Filter material | Takashi Tokiwa, Etsuroh Nakao | 1998-04-14 |