Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883733 | Electrophotographic printing process using photochromic compound | Eiji Imada, Yoshimi Kojima, Shuhei Tsuchimoto | 1989-11-28 |
HS
Hiroshi Sugimura
Overall (1989): #104,071 of 140,708Top 75%
1
Patents 1989