Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864304 | Analog voltage signal comparator circuit | Toshimasa Kawaai | 1989-09-05 |
| 4853886 | Digital signal processing circuit | — | 1989-08-01 |
| 4821084 | Insulated gate type field effect transistor | Masanori Kinugasa, Fuminari Tanaka, Hirokata Ohta | 1989-04-11 |
| 4813008 | Multiplier circuit suitable for obtaining a negative product of a multiplier and a multiplicand | Mikio Shiraishi, Yasuhiro Watanabe, Nobuo Sugi | 1989-03-14 |