Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5464470 | Color-changing marking composition system | Keith Allison | 1995-11-07 |
| 5055498 | Plastic crayon | — | 1991-10-08 |
| RE31213 | Polyolefin composition having high impact resistance and high temperature flow resistance | — | 1983-04-19 |
| 4229504 | Polyolefin composition having high impact resistance and high temperature flow resistance | — | 1980-10-21 |