Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852732 | Package for dry-resist material | Hermann Schmidt | 1989-08-01 |
| 4407321 | Drag reducing agents | Werner Interthal, Friedrich Engelhardt | 1983-10-04 |
| 4263927 | Process using polyacrylamide drag reducing agent in the form of an aqueous jelly | Werner Interthal, Gunter Gruber, Gerhard Slebos | 1981-04-28 |