Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252954 | Multiplexed driving method for an electrooptical device, and circuit therefor | Tetsuya Nagata, Tatsuo Igawa | 1993-10-12 |
| 5182596 | Device for measuring surface potentials at photosensitive body and electrostatic recording apparatus using said device | Takashi Nakazawa, Minoru Ohshima, Masami Ishikawa, Tsukasa Ogawa, Tohru Miyasaka | 1993-01-26 |
| 5177531 | Electrostatic recorder and electrostatic latent image measuring instrument | Toru Miyasaka, Tetsuya Nagata, Tatsuo Igawa | 1993-01-05 |
| 5138380 | Electrostatic recording apparatus, method of controlling the apparatus, and method of evaluating life of photoconductive member of electrostatic recording apparatus | Toru Miyasaka, Osamu Namikawa, Isamu Komatsu | 1992-08-11 |
| 5095376 | Apparatus and method for driving an optical printer having a liquid crystal optical switch | Tetsuya Nagata, Tatsuo Igawa | 1992-03-10 |
| 4959693 | Duplex reproducing apparatus with device for cooling and conveying fused toner image | Teruaki Mitsuya, Takao Kumasaka, Yasuro Hori, Ikuo Shimokobe, Nobuyoshi Hoshi | 1990-09-25 |
| 4818835 | Laser marker and method of laser marking | Kouji Kuwabara, Makoto Yano | 1989-04-04 |
| 4783149 | Time-sharing drive liquid crystal optical switch array and optical printer using this optical switch array | Tetsuya Nagata, Yuzuru Simazaki, Tatsuo Igawa, Yasuro Hori | 1988-11-08 |
| 4769659 | Printer utilizing optical switch elements | Kazuya Ooishi, Tatsuo Igawa, Yasuro Hori | 1988-09-06 |
| 4746196 | Multiplexed driving method for an optical switching element employing ferroelectric liquid crystal | Tetsuya Nagata, Yuzuru Simazaki, Tatsuo Igawa, Yasuro Hori | 1988-05-24 |
| 4712876 | Driving ferroelectric liquid crystal printers via short circuiting | Kazuya Ooishi, Tatsuo Igawa, Yasuro Hori | 1987-12-15 |
| 4634226 | Optical apparatus using ferroelectric liquid crystal and switching unit for emitted light | Masato Isogai, Shintaroo Hattori, Kishiro Iwaskai, Akio Mukoh, Yoshiharu Nagae | 1987-01-06 |
| 4591886 | Driving method and apparatus for optical printer with liquid-crystal switching element | Kazuya Ooishi, Tatsuo Igawa, Yasuro Hori, Yoshiharu Nagae, Masato Isogai | 1986-05-27 |
| 4586790 | Display panel having uniaxially-stretched organic polymer film as the substrate | Takao Miyashita, Yuzuru Shimazaki, Tatsuo Igawa, Ken Sasaki, Shigeru Matsuyama | 1986-05-06 |
| 4505546 | Liquid crystal display device | Yuzuru Simazaki, Tatsuo Igawa, Seikichi Tanno, Ken Sasaki, Takao Miyashita | 1985-03-19 |
| 4362771 | Liquid crystal display element with gap controlling material and process for production thereof | Tatsuo Igawa, Yuzuru Simazaki, Takao Miyashita, Fumio Nakano | 1982-12-07 |