Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816501 | Heat-sensitive color developable composition | Hitoshi Shimizu, Hiroshi Inoue, Yoshimi Ishizuka, Hiroshi Hirano | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816501 | Heat-sensitive color developable composition | Hitoshi Shimizu, Hiroshi Inoue, Yoshimi Ishizuka, Hiroshi Hirano | 1989-03-28 |