Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5771313 | Apparatus for and method of detecting dotted image area using two types of judging areas | Shinji Hayashi, Hidechika Kumamoto | 1998-06-23 |
| 5764370 | Enlargement and reduction apparatus for an image forming apparatus | Katsumi Amakawa, Haruo Yamamoto | 1998-06-09 |
| 5754708 | Dotted image area detecting apparatus and dotted image area detecting method | Shinji Hayashi, Hidechika Kumamoto | 1998-05-19 |
| 5754312 | Method of and apparatus for detecting pixels constituting dotted image area utilizing distance between change points of pixel values | Haruo Yamamoto, Masayuki Mizuno, Hidechika Kumamoto, Shinji Hayashi | 1998-05-19 |
| 5754683 | Image forming apparatus and gradation output adjusting method in image forming apparatus | Syuji Hayashi, Katsumi Amakawa, Koji Nakamura, Haruo Yamamoto | 1998-05-19 |
| 5745256 | Image processing controller | — | 1998-04-28 |
| 5729627 | Apparatus for and method of judging dotted image area | Masayuki Mizuno, Haruo Yamamoto, Hidechika Kumamoto | 1998-03-17 |
| 5715378 | Density processing method | Haruo Yamamoto, Shuji Hayashi, Tetsuya Kagawa | 1998-02-03 |
| 5712924 | Image processing apparatus | Haruo Yamamoto, 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 | Haruo Yamamoto | 1997-12-02 |
| 5685964 | Oxygen concentration sensor element | Isao Watanabe, Masahiro Shibata | 1997-11-11 |
| 5684600 | Image processor for smoothing and differentiating periodic areas and character areas using coefficients | Tadashi Miyazaki, Hidechika Kumamoto, Haruo Yamamoto, Shinji Hayashi | 1997-11-04 |
| 5642201 | Electrographic copying machine | Shinji Hayashi, Katsumi Amakawa | 1997-06-24 |
| 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 | Haruo Yamamoto | 1996-12-31 |
| 5539539 | Color converting circuit for use in an image forming apparatus | Katsumi Amakawa, Ryuichi Okumura, Haruo Yamamoto, Toshio Watanabe | 1996-07-23 |
| 5537639 | Method of communicating between CPUs within a copying machine with transmitting and receiving buffers divided into control flag area and data area | Masashi Matsumoto | 1996-07-16 |
| 5515096 | Color image processing apparatus with processing means for selectively adjusting color image data to increase black color density and reduce the density of other colors | — | 1996-05-07 |
| 5499361 | Density processing method | Haruo Yamamoto, Shuji Hayashi, Tetsuya Kagawa | 1996-03-12 |
| 5422740 | Image forming apparatus which effects output gray level correction | Haruo Yamamoto, Shuji Hayashi, Tetsuya Kagawa | 1995-06-06 |
| 5418896 | Skew processing circuit and method of calculating a preset value for the same | Hidechika Kumamoto, Haruo Yamamoto, Tsukasa Matsushita | 1995-05-23 |
| 5296836 | Gas component detecting element and detector | Toshiki Saburi, Tadashi Tsuruta, Naochika Nunogaki | 1994-03-22 |
| 5272546 | Laser beam controller | Haruo Yamamoto, Akira Shimatani, Hidechika Kumamoto, Tsukasa Matsushita | 1993-12-21 |
| 5182136 | Gas component detecting element and detector | Toshiki Saburi, Tadashi Tsuruta, Naochika Nunogaki | 1993-01-26 |
| 5072310 | IC card for image processor | Haruo Yamamoto, Tsukasa Matsushita, Hidechika Kumamoto | 1991-12-10 |
| 5041919 | Image processing apparatus | Haruo Yamamoto, Shinobu Satonaka, Tsukasa Matsushita | 1991-08-20 |