Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331539 | Purification of regenerated sizing liquors | Wolfgang Schenk, Wilfried Kothe | 1982-05-25 |
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Overall (All Time): #4,070,283 of 4,157,543Top 100%
1
Patents All Time