Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6967053 | Durable, open-faced retroreflective prismatic construction | Patrick W. Mullen, Robert B. Nilsen | 2005-11-22 |
| 6231797 | Method for forming a retroreflective sheeting | Jay Soaft | 2001-05-15 |
| 6143224 | Method for forming a retroreflective sheeting | Jay Soaft | 2000-11-07 |
| 6120636 | Apparatus and method for producing retroreflective material having printed patterns thereon | Robert B. Nilsen, Michael J. Hanrahan | 2000-09-19 |
| 6119751 | Apparatus and method for producing retroreflective material having printed patterns thereon | Robert B. Nilsen, Michael J. Hanrahan | 2000-09-19 |
| 6039909 | Method for forming a retroreflective sheeting having a plurality of cells with multi-course, hatched patterned perimeters | Jay Soaft | 2000-03-21 |
| 5643400 | Method and apparatus for producing seamless retroreflective sheeting | Robert B. Nilsen, Michael J. Hanrahan | 1997-07-01 |
| 5592330 | Retroreflective prism arrays with formed air spheres therein | — | 1997-01-07 |
| 5558740 | Method and apparatus for producing seamless retroreflective sheeting | Robert B. Nilsen, Michael J. Hanrahan | 1996-09-24 |