Issued Patents All Time
Showing 126–143 of 143 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6778485 | Optical storage device having liquid crystal layers varying light in phase between 0 and &pgr; | Hiroyasu Yoshikawa, Tatsuo Uchida | 2004-08-17 |
| 6584058 | Optical storage device and liquid crystal device having separate liquid crystal layers with opposing electrodes | Hiroyasu Yoshikawa, Tatsuo Uchida | 2003-06-24 |
| 6560189 | Optical information storage apparatus | Nobuhide Aoyama | 2003-05-06 |
| 6407967 | Optical apparatus, tracking apparatus and optical disk apparatus | Wataru Odajima | 2002-06-18 |
| 6325478 | Printing device with print density changing function | Koji Imai | 2001-12-04 |
| 6256459 | Developing apparatus and image forming apparatus using the same developing apparatus and method of determining end-of-toner condition | Tomoji Ishikawa, Takeroh Kurenuma, Makoto Yoshioka | 2001-07-03 |
| 6088458 | Vibration inhibiting structure in device cover | Kazutaka Sakaguchi, Naoto Ono | 2000-07-11 |
| 5982402 | Apparatus for printing color image by combination of optical beam scanning units and photosensitive drums | Hiroyasu Yoshikawa, Masato Nakashima, Fumio Yamagishi | 1999-11-09 |
| 5857131 | Image forming condition control device and method for an image forming apparatus | — | 1999-01-05 |
| 5508787 | Method and apparatus for controlling process condition for image formation | Yasushi Koichi | 1996-04-16 |
| 5387965 | Toner concentration control method | Yasushi Koichi, Shinji Kato | 1995-02-07 |
| 5327196 | Image forming method | Shinji Kato, Yasushi Koichi | 1994-07-05 |
| 5198861 | Image density control method for an image forming apparatus for reducing background contamination of a photoconductive drum | Hajime Oyama, Eiichi Katoh, Masao Moriya | 1993-03-30 |
| 5182600 | Toner end detecting method for an electrophotographic copier | Hajime Oyama, Eiichi Katoh, Masao Moriya | 1993-01-26 |
| 4957336 | Laser beam scanner and its fabricating method | Masayuki Kato, Fumio Yamagishi, Hiroyuki Ikeda, Takefumi Inagaki | 1990-09-18 |
| 4948213 | Beam scanner | Fumio Yamagishi, Hiroyuki Ikeda, Shigetake Iwata | 1990-08-14 |
| 4938550 | Holographic deflection device | Takefumi Inagaki, Fumio Yamagishi, Hiroyuki Ikeda | 1990-07-03 |
| 4824191 | Optical pickup | Masayuki Kato, Fumio Yamagishi, Hiroyuki Ikeda, Takefumi Inagaki | 1989-04-25 |