Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837179 | Method of making abrasive filaments comprising abrasive-filled thermoplastic elastomer | Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, Ronald O. Zemke | 1998-11-17 |
| 5491025 | Abrasive filaments comprising abrasive-filled thermoplastic elastomer | Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, Ronald O. Zemke | 1996-02-13 |
| 5443906 | Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporting same and methods of using said articles | Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, Ronald O. Zembke, deceased | 1995-08-22 |
| 5427595 | Abrasive filaments comprising abrasive-filled thermoplastic elastomer, methods of making same, articles incorporating same and methods of using said articles | Richard M. Pihl, Duane J. Hayes, Loren L. Barber, Jr., Dennis G. Welygan, Ronald O. Zemke | 1995-06-27 |