Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4277456 | Mineral substance based on a reversibly swellable tri-laminar mineral developed to be crystalline over a large area and having crystal layers separated from one another | — | 1981-07-07 |
| 4258074 | Process for the encrusting, pilling or granulating of seed material | Hans Grimm | 1981-03-24 |