Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4490405 | Single step extraction of bitter principle and tannins from hops | Louis von Horst | 1984-12-25 |
| 4234516 | Method of isomerizing humulone to isohumulone by catalytic acceleration with metal salts | Horst Koller, Gerhard Kirchner | 1980-11-18 |