Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5917652 | Durable retroreflective elements | James P. Mathers, Kathleen M. Humpal | 1999-06-29 |
| 5774265 | Durable retroreflective elements | James P. Mathers, Chris J. Goodbrake, Kathleen A. Hachey, Thomas P. Hedblom, Kathleen M. Humpal +3 more | 1998-06-30 |
| 5362554 | High temperature label | Mark R. Holzer | 1994-11-08 |
| 4931414 | Thermal extractive gelation process | Thomas E. Wood | 1990-06-05 |
| 4816333 | Silica coating | Harold G. Sowman, Soon-Kun Kang | 1989-03-28 |
| 4772511 | Transparent non-vitreous zirconia microspheres | Thomas E. Wood | 1988-09-20 |
| 4758469 | Pavement markings containing transparent non-vitreous ceramic microspheres | — | 1988-07-19 |
| 4564556 | Transparent non-vitreous ceramic particulate | — | 1986-01-14 |
| 4396650 | Primed inorganic substrates overcoated with curable protective compositions | Alek P. Szecsy | 1983-08-02 |
| 4356233 | Primed inorganic substrates overcoated with curable protective compositions | Alek P. Szecsy | 1982-10-26 |