Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5061317 | Colored nacreous pigment and a method for its preparation | Taina M. Korpi, Pekka Vapaaoksa | 1991-10-29 |
| 4527926 | Method for building a protective wall when constructing an underwater base | — | 1985-07-09 |