Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853262 | Cover film for microscopy | Masashi Ishiyama, Teiichi Tomizuka | 1989-08-01 |
| 4833063 | Color diffusion transfer element comprising two neutralizing layers and two timing layers | Hideki Tomiyama, Masaki Satake | 1989-05-23 |