Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238631 | Process of making non-metallic polymeric twist ties | Richard D. Stolk | 1993-08-24 |
| 4797313 | Non-metallic polymeric twist tie | Richard D. Stolk | 1989-01-10 |
| 4588776 | Polyvinyl halide polymer composition and shaped articles produced therefrom | Wayne J. Buchheim, William Vanderlinde, Donald S. T. Wang | 1986-05-13 |
| 4547428 | Terpolymer processing aid for polyvinyl halide polymers | Wayne J. Buchheim, William Vanderlinde, Donald S. T. Wang | 1985-10-15 |