Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9194544 | Light emitting device, illuminating apparatus, and display apparatus | Yasuhiro Ono, Makoto Masuda, Kenzo Ohkubo, Nobuhiro Shirai, Tetsushi Ito | 2015-11-24 |
| 8525863 | Optical scanning device and image forming apparatus | Kenzo Ohkubo, Nobuhiro Shirai | 2013-09-03 |
| 8089500 | Optical scanning device and image forming apparatus provided with the same | Manabu Matsuo, Nobuhiro Shirai | 2012-01-03 |
| 7791633 | Optical scanning unit and image forming apparatus | Takayuki Ohno, Yasuhiro Ono, Ayumu Oda, Takahisa Narikiyo | 2010-09-07 |
| 7755809 | Laser scanning optical system and image forming apparatus | Hirokazu Fujita, Kenzo Ohkubo, Yasuhiro Ono, Takayuki Ohno | 2010-07-13 |
| 7619799 | Light scanning device and image forming apparatus using the same | Atsushi Ueda | 2009-11-17 |
| 7049756 | Capacitive load driving circuit, capacitive load driving method, and apparatus using the same | Masahiko Aiba, Hirokazu Fujita | 2006-05-23 |
| 6447101 | Image forming device | Katsumi Adachi, Daisaku Imaizumi | 2002-09-10 |
| 5812160 | Image forming apparatus with improved assemblies for tore carrier, toner passage control device and backing electrode | Masayuki Tone, Keiji Itsukushima, Hidemasa Aiba, Ove Larson | 1998-09-22 |
| 5797062 | Measuring device for amount of charge of developer | Yoichi Yamamoto, Keiji Taniguchi | 1998-08-18 |
| 5767879 | Image forming apparatus | Koji Tsukamoto, Kenji Tani | 1998-06-16 |
| 5600355 | Color image forming apparatus by direct printing method with flying toner | — | 1997-02-04 |
| 5559586 | Image forming device having control grid with applied voltage of the same polarity as toner | — | 1996-09-24 |
| 5546169 | Copying machine with image superposition capability | Hirokazu Fujita, Koichi Inui | 1996-08-13 |
| 5486900 | Measuring device for amount of charge of toner and image forming apparatus having the measuring device | Keiji Taniguchi, Yoichi Yamamoto | 1996-01-23 |
| 5471283 | Device for preventing breakdown of contact charger for use in electrophotographic printing machine | Kouichi Irihara, Hideo Yamasa, Fumio Shimazu | 1995-11-28 |
| 5398102 | Electrophotographic copier and charging means used therefor | Kenji Tani, Takashi Hayakawa, Kouichi Irihara, Yukihito Nishio | 1995-03-14 |
| 5374949 | Image forming apparatus | Masayuki Tone, Hidemasa Aiba, Keiji Itsukushima, Ove Larson | 1994-12-20 |
| 5298945 | Electrophotographic printing machine | Kimihide Tsukamoto, Tomohiro Oikawa | 1994-03-29 |
| 4780741 | Method and apparatus for forming toner layer | Susumu Shoji | 1988-10-25 |