Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890251 | Arithmetic shifter with sign extend facility | Yasuhiko Nitta | 1989-12-26 |
| 4862139 | Anti-theft system for automotive vehicles | Masaaki Fukamachi, Nobuyuki Onitsuka, Akira Tanaka | 1989-08-29 |
| 4853204 | Method for production of oxidation-resistant silicon nitride material | Nobuyuki Azuma, Minoru Maeda | 1989-08-01 |
| 4842840 | Method for production of oxidation-resistant sialon and silicon carbide materials | Nobuyuki Azuma, Minoru Maeda, Mamoru Yamada | 1989-06-27 |
| 4813612 | Paper feeding device | Atsushi Kano, Masayuki Mizuno, Manabu Kajiwara, Kenji Sakaue, Yuji Abe | 1989-03-21 |
| 4809387 | Mop with squeezer | Yasuaki Keiko | 1989-03-07 |
| 4795248 | Liquid crystal eyeglass | Takao Okada, Takeaki Nakamura, Kimihiko Nishioka, Toshihito Kouchi, Hiroyuki Yamamoto +1 more | 1989-01-03 |