Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874494 | Semiconductor manufacturing apparatus | — | 1989-10-17 |
| 4872044 | Static induction type thyristor | Jun-ichi Nishizawa | 1989-10-03 |
| 4869301 | Cylinder cabinet piping system | Kazuhiko Sugiyama, Fumio Nakahara, Masaru Umeda | 1989-09-26 |
| 4847668 | Device and method of photoelectrically converting light into electrical signal | Shigetoshi Sugawa, Nobuyoshi Tanaka, Toshiji Suzuki, Tadanori Harada | 1989-07-11 |
| 4828219 | Metal diaphragm valve | Yohichi Kanno, Osamu Uchisawa, Kazuhiko Sato | 1989-05-09 |
| 4824546 | Semiconductor manufacturing apparatus | — | 1989-04-25 |
| 4814839 | Insulated gate static induction transistor and integrated circuit including same | Jun-ichi Nishizawa | 1989-03-21 |
| 4795582 | Surface treating composition for micro processing | Nobuhiro Miki, Hirohisa Kikuyama | 1989-01-03 |