Issued Patents 1989
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875074 | Image recording apparatus | Kazuo Sangyoji, Jun Sakai, Shigeyuki Hayashi, Yasuo Kimura | 1989-10-17 |
| 4866673 | BI-MOS semiconductor memory having high soft error immunity | Hisayuki Higuchi, Noriyuki Homma, Kiyoo Itoh | 1989-09-12 |
| 4865407 | Optical waveguide element, method of making the same and optical coupler employing optical waveguide element | Akihiro Suzuki, Yutaka Hattori, Kazuyuki Miyaki, Masayuki Yoshida, Kazunari Taki +1 more | 1989-09-12 |
| 4858191 | Semiconductor integrated circuit | Hisayuki Higuchi, Noriyuki Homma | 1989-08-15 |
| 4847879 | Frequency sensing and control circuit | Kenzaburou Iijima, Yoshinori Hayashi, Atsushi Uchiyama | 1989-07-11 |
| RE32977 | Key-holding structure of keyboard with curved operating surface of keys | Hideo Gotoh, Satoshi Fukao | 1989-07-04 |
| 4842428 | Electronic typewriter with spell checking and correction | — | 1989-06-27 |
| 4841311 | Laser beam printer with compactly arranged photosensitive element, laser beam emitting element and reflective element | Satoshi Urukawa | 1989-06-20 |
| 4831198 | Method for adsorptive separation of dichlorotoluenes | Toshitaka Kaneshiki, Tadayoshi Haneda, Sueo Kanno, Yuichi Hane, Toshiyuki Endo +1 more | 1989-05-16 |
| 4825274 | Bi-CMOS semiconductor device immune to latch-up | Hisayuki Higuchi | 1989-04-25 |
| 4824220 | Device for forming an image with a laser beam | Takemi Yamamoto, Kuniyasu Makino | 1989-04-25 |
| 4816912 | Laser-beam printer with improved optical deflector | Kazunari Taki | 1989-03-28 |
| 4805144 | Solid memory medium and information reproduction system using the medium | Akihiro Suzuki | 1989-02-14 |