Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6706920 | Antistatic composition | William M. Lamanna, Thomas P. Klun, Alan D. Fanta | 2004-03-16 |
| 6372829 | Antistatic composition | William M. Lamanna, Thomas P. Klun, Alan D. Fanta | 2002-04-16 |
| 5774265 | Durable retroreflective elements | James P. Mathers, Chris J. Goodbrake, Thomas P. Hedblom, Kathleen M. Humpal, Roger W. Lange +3 more | 1998-06-30 |
| 5750191 | Retroreflective elements | Larry K. Stump, Terrance L. Beseup, Thomas V. Kusilek | 1998-05-12 |
| 5593246 | Patterned chalk-resistant pavement marking and method of making | Thomas P. Hedblom, Robert L. Keech | 1997-01-14 |
| 5571362 | Method for making retroreflective article with dual reflectors | Thomas P. Hedblom, David C. May | 1996-11-05 |
| 5417515 | Retroreflective article with dual reflector | Thomas P. Hedblom, David C. May | 1995-05-23 |