Issued Patents All Time
Showing 1–25 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11485950 | Cell stimulation device, cell culture device, and cell stimulation method | Hiroyuki Hirakawa, Tadashi Iwamatsu, Yasuhiro Sakamoto, Hiroyuki Yamaji, Kohji Shinkawa +3 more | 2022-11-01 |
| 8107728 | Image processing apparatus, image forming apparatus, image processing system, computer program and recording medium | MAKOTO OHTSU, Masakazu Ohira, Hitoshi Hirohata | 2012-01-31 |
| 7285158 | Recording agent, image forming device, and image forming method | Takuya Iwanami, Satoshi Nishigaki, Tohru Sakuwa | 2007-10-23 |
| 6240203 | Image discriminating apparatus | Hiroshi Kawano | 2001-05-29 |
| 6097501 | Color correction device | Shuji Hayashi, Koji Nakamura | 2000-08-01 |
| 5805313 | Color correcting method and color correcting device involving masking equation variation based upon gray levels for a selected color | Shuji Hayashi, Koichi Matsuo, Shinji Hayashi | 1998-09-08 |
| 5801845 | Image data processor for representing gray levels by a plurality of pixels | Syuji Hayashi, Masaya Fujimoto, Koji Nakamura, Ryuichi Okumura | 1998-09-01 |
| 5799139 | Image formation processing system | Katsumi Amakawa, Shuji Hayashi, Masaya Fujimoto, Koichi Matsuo, Ryuichi Okumura +1 more | 1998-08-25 |
| 5790261 | Color correction device to correct errors in input and output portions of an image developing device and method thereof | Shinji Hayashi, Masayuki Mizuno | 1998-08-04 |
| 5790282 | Apparatus and method for adjusting color image by changing saturation without changing brightness | Syuji Hayashi | 1998-08-04 |
| 5764370 | Enlargement and reduction apparatus for an image forming apparatus | Katsumi Amakawa, Masaya Fujimoto | 1998-06-09 |
| 5754683 | Image forming apparatus and gradation output adjusting method in image forming apparatus | Syuji Hayashi, Masaya Fujimoto, Katsumi Amakawa, Koji Nakamura | 1998-05-19 |
| 5754316 | Color correction device for correcting color deviations resulting from color filter characteristics | Shuji Hayashi, Shinji Hayashi | 1998-05-19 |
| 5754312 | Method of and apparatus for detecting pixels constituting dotted image area utilizing distance between change points of pixel values | Masaya Fujimoto, Masayuki Mizuno, Hidechika Kumamoto, Shinji Hayashi | 1998-05-19 |
| 5748857 | Image gradation setting device for use in an image forming apparatus | Koji Nakamura, Shuji Hayashi | 1998-05-05 |
| 5729627 | Apparatus for and method of judging dotted image area | Masayuki Mizuno, Masaya Fujimoto, Hidechika Kumamoto | 1998-03-17 |
| 5715378 | Density processing method | Masaya Fujimoto, Shuji Hayashi, Tetsuya Kagawa | 1998-02-03 |
| 5712924 | Image processing apparatus | Masaya Fujimoto, Tadashi Miyazaki, Hidechika Kumamoto, Shinji Hayashi | 1998-01-27 |
| 5694527 | Image forming apparatus which processes input data based upon parameter data representative of a characteristic of image processing data | Masaya Fujimoto | 1997-12-02 |
| 5684600 | Image processor for smoothing and differentiating periodic areas and character areas using coefficients | Tadashi Miyazaki, Masaya Fujimoto, Hidechika Kumamoto, Shinji Hayashi | 1997-11-04 |
| 5589950 | Image forming apparatus that corrects input gray level-output gray level characteristic data such that output gray levels gradually increase with higher input gray levels near a boundary | Masaya Fujimoto | 1996-12-31 |
| 5539539 | Color converting circuit for use in an image forming apparatus | Masaya Fujimoto, Katsumi Amakawa, Ryuichi Okumura, Toshio Watanabe | 1996-07-23 |
| 5499361 | Density processing method | Masaya Fujimoto, Shuji Hayashi, Tetsuya Kagawa | 1996-03-12 |
| 5422740 | Image forming apparatus which effects output gray level correction | Masaya Fujimoto, Shuji Hayashi, Tetsuya Kagawa | 1995-06-06 |
| 5418896 | Skew processing circuit and method of calculating a preset value for the same | Hidechika Kumamoto, Masaya Fujimoto, Tsukasa Matsushita | 1995-05-23 |