Issued Patents All Time
Showing 176–200 of 203 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942369 | Controlled current producing differential circuit apparatus | Chikashi Nakagawara, Akihiro Murayama | 1990-07-17 |
| 4938801 | Printing inks | Yoshioki Yoshioka, Kiyoe Hoshino | 1990-07-03 |
| 4901325 | Semiconductor laser device | Takeshi Kato, Kenichi Mizuishi, Katuaki Chiba, Takeshi Nakao, Masahiro Ojima +1 more | 1990-02-13 |
| 4873678 | Optical head and optical information processor using the same | Sadatsugi Machida, Tsuyoshi Toda | 1989-10-10 |
| 4855991 | Optical disk having track offset detection areas | Toshimitsu Kaku, Yoshito Tsunoda, Takeshi Maeda | 1989-08-08 |
| 4839257 | Color diffusion transfer photographic film unit | Minoru Minoda, Keisuke Shiba | 1989-06-13 |
| 4835756 | Optical memory apparatus using an optical disc having guide-grooves of V-shape and predetermined optical depth and access method therefor | Toshimitsu Kaku, Takeshi Maeda, Masaru Ito, Kazuo Shigematsu, Yoshito Tsunoda | 1989-05-30 |
| 4815058 | Optical information processing apparatus | Yoshito Tsunoda | 1989-03-21 |
| 4807923 | Window seal construction for sashless door | — | 1989-02-28 |
| 4770507 | Prism optics and optical information processing apparatus | Akira Arimoto | 1988-09-13 |
| 4758498 | Processing composition for use in color diffusion transfer photography containing a dye image stabilizer | Toru Harada, Hiroshi Tanabe | 1988-07-19 |
| 4743774 | Method and apparatus for optical detection of information | Takeshi Maeda, Hisataka Sugiyama, Kazuo Shigematsu, Atsushi Saito | 1988-05-10 |
| 4742218 | Focus error detection apparatus utilizing focusing an front and rear sides of focal planes | Toshimasa Kamisada, Akira Saito, Takeshi Maeda, Yoshito Tsunoda, Toshimitsu Kaku +3 more | 1988-05-03 |
| 4731771 | Tracking servo setting method and apparatus | Takeshi Maeda, Kazuo Shigematsu, Yoshito Tsunoda, Masuo Kasai | 1988-03-15 |
| 4727798 | Popcorn processing machine | — | 1988-03-01 |
| 4725721 | Autofocusing control system | Yoshito Tsunoda, Takeshi Maeda | 1988-02-16 |
| 4663751 | Optical information processor for compensating offset | Toshimitsu Kaku, Yoshito Tsunoda, Takeshi Maeda | 1987-05-05 |
| 4610959 | Direct positive silver halide photographic materials | Shigetoshi Ono, Kazuhiko Matsumoto | 1986-09-09 |
| 4571376 | Color diffusion transfer photographic film unit with 1-M-(methyl or ethyl)phenyl-4-methyl-4-hydroxymethyl pyrazolidinones | Toru Harada, Shigeo Hirano, Isao Shimamura | 1986-02-18 |
| 4533626 | Photographic light-sensitive material with 4-(paranitrophenylazo)naphthol dyes | Shigetoshi Ono, Toru Harada, Hirohisa Suzuki, Mitsugu Tanaka | 1985-08-06 |
| 4532522 | Optical recording apparatus | Yoshito Tsunoda, Takeshi Maeda, Toshimitsu Kaku | 1985-07-30 |
| 4525826 | Optical track position detecting apparatus and optical information processor using the same | Yoshito Tsunoda, Kazuo Shigematsu, Toshimitsu Kaku, Takeshi Maeda, Tsuyoshi Kato | 1985-06-25 |
| 4506001 | Photographic recording material containing novel coordination polymer | Shinji Sakaguchi, Hisashi Okamura | 1985-03-19 |
| 4468452 | Color diffusion transfer photographic elements | Shigetoshi Ono, Seiji Suzuki, Hirohisa Suzuki | 1984-08-28 |
| 4450547 | Focal position detecting optical apparatus | Takeshi Maeda, Toshimitsu Kaku, Yoshito Tsunoda, Wasao Takasugi, Tokuya Kaneda | 1984-05-22 |