Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859966 | Current amplifier circuit and a current amplifying type differential current converter circuit | Akira Yamakoshi, Toyohiko Fujita, Kunihiko Tsukakoshi | 1989-08-22 |
| 4804927 | Current amplifier circuit | Akira Yamakoshi, Toyohiko Fujita, Kunihiko Tsukakoshi | 1989-02-14 |
| 4801892 | Current mirror circuit | Akira Yamakoshi, Toyohiko Fujita, Kunihiko Tsukakoshi | 1989-01-31 |