Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623809 | Battery separator and manufacturing method thereof, and alkali secondary battery having the separator incorporated therein | Masahiko Tsukiashi, Hirohito Teraoka, Katsuyuki HATA | 2003-09-23 |