Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6641627 | Abrasive articles | Steven J. Keipert, Dennis G. Welygan | 2003-11-04 |
| 6359068 | High-friction polymer blends comprising polypropylene and thermoplastic block copolymers | Dennis G. Welygan | 2002-03-19 |
| 6207246 | Nonwoven abrasive material roll | Douglas S. Spencer, Laurie A. Windisch | 2001-03-27 |
| 6106922 | Coextruded mechanical fastener constructions | John E. Cejka, Mark R. Dupre, Jeffrey O. Emslander, William H. Hartt, Robert D. Kampfer +8 more | 2000-08-22 |
| 6060009 | Method of laminate formation | Dennis G. Welygan | 2000-05-09 |
| 5908680 | Replaceable roll covers with repositionable pressure sensitive adhesive | David E. Johnson, Dennis G. Welygan | 1999-06-01 |
| 5712210 | Nonwoven abrasive material roll | Laurie A. Windisch, Charlie A. Hanf, C. Mathew Barnard | 1998-01-27 |
| 4933373 | Abrasive wheels | — | 1990-06-12 |