Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670246 | Treatment of polyamide materials with partial fluoroesters or fluorothioesters of maleic acid polymers and sulfonated aromatic condensates | Engelbert Pechhold | 1997-09-23 |
| 5601910 | Rug underlay substantially impervious to liquids | Edward James Greenwood | 1997-02-11 |