Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843254 | Master-slave flip-flop circuit with three phase clocking | Hisatoshi Motegi | 1989-06-27 |
| 4816499 | Porous inorganic particles modified with amino and carboxyl groups | Joseph Yamada | 1989-03-28 |