Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143052 | Hydrogen storage material | Tadashi Kiyokawa, Hajime Kiyokawa | 2000-11-07 |
| 5874168 | Fluorocarbon compound-hydrogen storage alloy composite and method of manufacturing the same | Hajime Kiyokawa, Susumu Yonezawa | 1999-02-23 |
| 5791901 | Artificial tooth and manufacturing method of an acrylic resin denture | — | 1998-08-11 |
| 4949123 | Toner supply device for a developing apparatus | — | 1990-08-14 |
| 4901113 | Image-forming device | Noboru Sawayama, Shinichi Kamiyama, Hideo Yuh, Tadayuki Sekiya | 1990-02-13 |
| 4855783 | Agitating roller and restricting member for a developing device | Noboru Sawayama | 1989-08-08 |
| 4814821 | Image-forming device | Noboru Sawayama, Shinichi Kamiyama, Hideo Yuh, Tadayuki Sekiya | 1989-03-21 |