Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887877 | Optical devices and optical integrated circuits | Hiroaki Inoue, Shinji Sakano, Toshio Katsuyama, Hiroyoshi Matsumura | 1989-12-19 |
| 4867495 | Door locking device for a vehicle | — | 1989-09-19 |
| 4856829 | Pawl structure in a door locking device for a vehicle | Yasuaki Hori | 1989-08-15 |
| 4841315 | Exposure apparatus | Misao Kokabu, Takashi Fujimura, Nobuyasu Hayashi | 1989-06-20 |
| 4840446 | Photo semiconductor device having a multi-quantum well structure | Shinji Sakano, Hiroaki Inoue, Toshio Katsuyama, Hiroyoshi Matsumura | 1989-06-20 |
| 4841399 | Magnetoresistive magnetic head including zirconium sheet film | Masahiro Kitada, Noboru Shimizu, Hideo Tanabe, Tetsuo Kobayashi, Tooru Takeura +1 more | 1989-06-20 |
| 4841536 | Semiconductor laser devices | Aiko Ohishi, Motohisa Hirao, Naoki Chinone, Shinji Tsuji, Hiroyoshi Matsumura | 1989-06-20 |
| 4814919 | Soft-film-bias type magnetoresitive device | Masahiro Kitada, Hideo Tanabe, Noboru Shimizu, Yoshihisa Kamo, Tooru Takeura | 1989-03-21 |
| 4813757 | Optical switch including bypass waveguide | Shinji Sakano, Hiroaki Inoue, Hiroyoshi Matsumura, Toshio Katsuyama, Naoki Chinone | 1989-03-21 |
| 4807801 | Method of ameliorating the residual stresses in metallic duplex tubes and the like and apparatus therefor | — | 1989-02-28 |
| 4796653 | Method of enhancing residual compressive stress in double metallic tubes | Masahiro Kobayashi, Akitake Matsushita, Shinji Tanaka, Shuji Furuya | 1989-01-10 |