Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676804 | Method for fabricating fresnel lenses by selective application and removal of films on lens surfaces | Hiroshi Hamada, Naoyuki Tanaka | 1997-10-14 |
AF
Akiyoshi Fujii
Overall (1997): #180,189 of 185,788Top 100%
1
Patents 1997