Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5036062 | Novel esters | Bertil Hansen, Per O. Gunnarsson, Sven åke Johansson | 1991-07-30 |
| 4536187 | Compositions comprising coal, water and polyelectrolyte | Bertil Hansen, Sten S. Kelfve | 1985-08-20 |