Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888208 | Ceramic substrate for printed circuits and production thereof | Ryu Yoneda, Kenichi Yokota, Hideo Miyake | 1989-12-19 |
| 4872042 | Semiconductor device | Hiroshi Iwai | 1989-10-03 |
| 4832464 | Optical system with grating lens assembly for correcting wavelength aberrations | Masayuki Kato, Fumio Yamagishi, Hiroyuki Ikeda, Takefumi Inagaki | 1989-05-23 |
| 4833647 | Semiconductor memory device having high capacitance and improved radiation immunity | Shizuo Sawada | 1989-05-23 |
| 4827886 | Crank angle detecting system for an internal combustion engine | — | 1989-05-09 |