Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689578 | Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler | Ryozo Yamauchi, Kuniharu Himeno, Fumio Suzuki, Kazuhiko Aikawa, Tetsuo Nozawa +1 more | 1997-11-18 |
| 5650642 | Field effect semiconductor device | Shigeharu Matsushita, Satoshi Terada, Emi Fujii, Yasoo Harada | 1997-07-22 |
| D378769 | Top spinner | Tsuyoshi Nonaka | 1997-04-08 |
| 5593338 | Spinner and adapter for toy tops and combination of spinner and toy top | Keisuke ITOH | 1997-01-14 |