Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5300190 | Process of producing diffraction grating | Hiroshi Sugimoto, Teruhito Matsui, Yuji Abe, Toshiyuki Ohishi | 1994-04-05 |
KO
Ken-ichi Ohtsuka
Overall (1994): #105,517 of 165,921Top 65%
1
Patents 1994