Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5022990 | Polyvinylidene fluoride porous membrane and a method for producing the same | Haruo Matsumura | 1991-06-11 |
| 4409339 | Hydrophilic sulfonated polyolefin porous membrane and process for preparing the same | Kazuo Matsuda, Mitsuo Kohno | 1983-10-11 |
| 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 |
| 4229297 | Method of separating oil from oil-containing liquid | Takashi Nohmi, Takao Yamada | 1980-10-21 |
| 4210709 | Microporous film battery separator | Osamu Fugii, Shigeo Kaneko, Takeo Hanamura | 1980-07-01 |
| 4190707 | Alkaline battery separator | Mitsuo Kohno, Katsumi Yoshitake | 1980-02-26 |