Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5863645 | Composite microporous polyolefin membrane and a method of producing the same | Kohji Ohbori, Noritaka Shibata | 1999-01-26 |
| 5057218 | Porous membrane and production process thereof | Toshinobu Koshoji, Hironari Honda, Kiyonobu Okamura, Osamu Nishimura | 1991-10-15 |
| 5043216 | Porous polyethylene fibers | Kiyonobu Okamura, Hironari Honda | 1991-08-27 |