Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11474015 | Viscosity measurement unit and viscometer | Hideyuki Amamiya, Yoshinori Nakashima, Keiji Kawada | 2022-10-18 |
| 7440604 | Image detector for bank notes | Keiji Tsuji, Wataru Iida, Tomoyoshi Zenki | 2008-10-21 |
| 7359543 | Image detector for bank notes | Keiji Tsuji, Tomoyoshi Zenki | 2008-04-15 |
| 6440187 | Alumina powder, process for producing the same and polishing composition | Kiyomi Ema, Isao Ota, Tohru Nishimura | 2002-08-27 |
| 6372003 | Polishing abrasive of crystalline ceric oxide particles having surfaces modified with hydroxyl groups | Isao Ota, Takao Kaga, Tohru Nishimura, Kenji Tanimoto | 2002-04-16 |
| 6350978 | Deterioration sensing device for light-emitting diode | — | 2002-02-26 |
| 6246705 | Optical scanning device | — | 2001-06-12 |
| 6203589 | Metal-resis bond grindstone and method for manufacturing the same | Hitoshi Ohmori, Nobuhide Itoh, Toshiro Karaki-Doy, Kenichiro Horio, Toshiaki Uno +1 more | 2001-03-20 |
| 6007592 | Polishing composition for aluminum disk and polishing process therewith | Isao Ota, Takao Kaga, Tohru Nishimura | 1999-12-28 |
| 5962343 | Process for producing crystalline ceric oxide particles and abrasive | Isao Ota, Takao Kaga, Tohru Nishimura, Kenji Tanimoto | 1999-10-05 |
| 5883731 | Multi-beam scanning device | — | 1999-03-16 |
| 5543955 | Optical scanning system | Yoshihiro Yamazaki, Takashi Iizuka | 1996-08-06 |
| 5408483 | Laser beam emitting device with selective laser beam power output level | Hiroto Watanabe, Yoshiyuki Araki | 1995-04-18 |
| 5309463 | Laser driving circuit | — | 1994-05-03 |
| 4915833 | Column filter using bundles of long fibers | Takeshi Iwatsuka | 1990-04-10 |
| 4886601 | Column filter using bundles of long fibers | Takeshi Iwatsuka | 1989-12-12 |