Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670209 | High brightness durable retro-reflecting microspheres and method of making the same | — | 1997-09-23 |
| 5576097 | High brightness durable retro-reflecting microspheres and method of making the same | — | 1996-11-19 |
| 5557461 | Omnidirectional retro-reflective roadway marker and the like | — | 1996-09-17 |
| 5316406 | Surface marker strip and methods for providing improved integrity and adhesion to roadway and the like | — | 1994-05-31 |
| 5139590 | Surface marker strip and methods for providing improved integrity and adhesion to roadways and the like | — | 1992-08-18 |
| 5108218 | Roadway and similar marker strip and method of forming same | — | 1992-04-28 |
| 5087148 | Surface marker strip and methods for providing improved integrity and adhesion to roadways and the like | — | 1992-02-11 |
| 4969713 | Marker strip surface for roadways and the like | — | 1990-11-13 |
| 4681401 | Sheet material marker surface for roadways and the like | — | 1987-07-21 |
| 4345023 | Process for increasing the effective speed of photographic films and improved film structures | — | 1982-08-17 |
| 4236788 | Direction-indicating surface marker strip for roadways and the like | — | 1980-12-02 |