Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4770778 | Hollow fiber semipermeable membrane element and a method of producing the same | Takashi Ogawa, Nobuatsu Watanabe, Kazuo Toyomoto | 1988-09-13 |
| 4267080 | Polyethylene composition for rotational molding | Yoshiaki Nakayama, Yasuo Yasuda | 1981-05-12 |