Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36624 | Optical recording media and information recording and reproducing units | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Yoshimi Katoh, Yoshio Sato +2 more | 2000-03-21 |
| 5583840 | ROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable disk | Hiroyuki Minemura, Yoshio Sato, Nobuyoshi Tsuboi, Masaichi Nagai, Isao Ikuta +4 more | 1996-12-10 |
| 5572502 | Optical disk apparatus | Atsuko Naruse, Yoshihito Maeda, Yoshimi Kato, Isao Ikuta, Masaichi Nagai +4 more | 1996-11-05 |
| 5484686 | Optical recording media and information recording and reproducing units | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Yoshimi Katoh, Yoshio Sato +2 more | 1996-01-16 |
| 5475656 | Optical disk memory and information processing apparatus | Yoshio Sato, Nobuyoshi Tsuboi, Hiroyuki Minemura, Masaichi Nagai, Isao Ikuta +4 more | 1995-12-12 |
| 5424163 | Picture recording method using a dispersant having coloring agent particles contained therein | Hiroshi Tokunaga, Akira Shirakura, Hideki Matsuzaka, Yuichirou Ikemoto, Toshimi Fukuoka +4 more | 1995-06-13 |
| 5420845 | Methods of varying optical properties, optical devices, information recording media and information recording methods and apparatuses | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Yoshimi Kato, Nobuo Tsukamoto | 1995-05-30 |
| 5371730 | Optical memory and information processing apparatus | Yoshihito Maeda, Isao Ikuta, Masaichi Nagai, Yoshimi Katou, Nobuyoshi Tsuboi +4 more | 1994-12-06 |
| 5353642 | Centrifugal type acceleration measuring device | Osamu Hasegawa, Kohichi Satoh, Youji Miura, Keinosuke Shirota | 1994-10-11 |
| 5317556 | Information processing apparatus and optical head incorporated therein | Nobuyoshi Tsuboi, Yoshio Sato, Hiroyuki Minemura, Masaichi Nagai, Isao Ikuta +4 more | 1994-05-31 |
| 5311494 | Optical disk apparatus and optical head | Tatsuya Sugita, Yoshio Sato, Nobuyoshi Tsuboi, Hiroyuki Minemura | 1994-05-10 |
| 5274612 | Information processor and disk memory used in the same | Yoshio Sato, Nobuyoshi Tsuboi, Hiroyuki Minemura, Masaichi Nagai, Isao Ikuta +4 more | 1993-12-28 |
| 5187052 | Optical recording medium | Yoshihito Maeda, Toshiki Kaneko, Masaichi Nagai, Yoshimi Katou, Isao Ikuta +1 more | 1993-02-16 |
| 4907015 | Thermal printing head | Toshiki Kaneko, Yoshiaki Kita, Kiyoshi Konno | 1990-03-06 |
| 4836978 | Method for making vacuum circuit breaker electrodes | Ryuji Watanabe, Kiyoji Iwashita, Kinko Shimizu | 1989-06-06 |
| 4773059 | Information recording and reproducing apparatus having recording medium made of alloy which has at least two different crystalline structures in its solid state | Tetsuro Minemura, Isao Ikuta, Yoshiaki Kita | 1988-09-20 |