Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5989628 | Plastic lenses and method of producing the same | Yoshio Onisawa, Kohei Shimizu | 1999-11-23 |
| 5985420 | Plastic lenses and method of producing the same | Yoshio Onisawa, Kohei Shimizu | 1999-11-16 |
| 4413025 | Coating composition for polycarbonate moldings containing partially hydrolyzed alkyltrialkoxysilane and polyvinylbutyral | Yasuzi Omori | 1983-11-01 |