Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343948 | 2,6-Di-tert-butyl-4-methyl thiopyrylium salt | Kouichi Kawamura, Hideo Sato | 1982-08-10 |
| 4315983 | 2,6-Di-tert-butyl-4-substituted thiopyrylium salt, process for production of same, and a photoconductive composition containing same | Koichi Kawamura, Hideo Sato | 1982-02-16 |