Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4322324 | Ampho-ionic group-containing alkyd resins | Shin Ishikura, Keizo Ishii | 1982-03-30 |
| 4309327 | Polymeric resin from ethylenic amino, sulfonic monomers | Shinichi Ishikura, Keizou Ishii, Tamotu Yoshioka | 1982-01-05 |