Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879269 | Pressure sensitive copy material | Naoya Takahashi, Eiichi Matsuzaka | 1989-11-07 |
| 4803238 | Polymer composition | Atsushi Sato, Keiji Endo, Shigenobu Kawakami, Eiichi Matsuzaka | 1989-02-07 |