Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4335193 | Microporous film, particularly battery separator, and method of making | Shigeo Kaneko, Takeo Hanamura, Osamu Fujii, Katsumi Yoshitake, Tetsuhiko Hirata +1 more | 1982-06-15 |
| 4331622 | Method for manufacturing a microporous film having low electrical resistance and high durability | Osamu Fujii, Shigeo Kaneko, Takeo Hanamura | 1982-05-25 |