Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889841 | Thermosensitive recording materials | Takao Kosaka, Masahiro Miyauchi, Masahiro Higuchi | 1989-12-26 |
| 4874740 | Thermosensitive recording material | Shigetoshi Hiraishi, Kazuyoshi Kondo, Mitsuru Fuchigami | 1989-10-17 |