Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4891241 | Method of increasing the dynamical strength of glass container | Masanobu Yumoto, Toshihiko Umaba, Yutaka Kamada, Tsutomu Matsubara, Sigeo Kawaguchi | 1990-01-02 |
| 4884866 | Fluorine-containing resin composition having low refractive index | Masayuki Kamei, Toshihiko Umaba | 1989-12-05 |
| 4786658 | Fluorine-containing resin composition having low refractive index | Masayuki Kamei, Toshihiko Umaba | 1988-11-22 |
| 4623598 | Flat battery | Eiichi Waki, Shigeo Kobayashi, Miyoji Nakai | 1986-11-18 |
| 4561462 | Multiple control valve system | — | 1985-12-31 |
| 4557291 | Multiple control valve system | — | 1985-12-10 |
| 4536298 | Aqueous foam fire extinguisher | Masayuki Kamei, Tomio Endo | 1985-08-20 |
| 4489644 | Multiple control valves | Toshiaki Tsukimoto, Chiharu Matsunaga | 1984-12-25 |
| 4486391 | Separation and recovery of ionic substances by fluorine-containing compound | — | 1984-12-04 |
| 4431595 | Fluorine-containing aminosulfonate | Masayuki Kamei, Toshihiko Umaba, Tadashi Ito | 1984-02-14 |