Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876040 | Two-stage process for preparing aromatic polyamide fiber | Ho Joon Park, Moo S. Rhim, Hak Mook Kim, Du Hyun Kim, Seog C. Yoo +4 more | 1989-10-24 |
| 4796585 | Vacuum advance regulator for a spark ignition engine | — | 1989-01-10 |