Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411230 | Light polarizer | Robert B. Nilsen, Patrick W. Mullen, Michael J. Hanrahan | 2013-04-02 |
| 8054416 | Light polarizer | Robert B. Nilsen, Patrick W. Mullen, Michael J. Hanrahan | 2011-11-08 |
| 7790266 | Reboundable optical structure | — | 2010-09-07 |
| 6979512 | Colloidal battery | — | 2005-12-27 |
| 6734235 | Extended life fluorescence polyvinyl chloride sheeting | — | 2004-05-11 |
| 6676261 | Retroreflective film product | Patrick W. Mullen | 2004-01-13 |
| 6552106 | Extended life fluorescence polyvinyl chloride sheeting | — | 2003-04-22 |
| 6537649 | Retroreflective structure | David C. Martin, William P. Rowland | 2003-03-25 |
| 6323266 | Extended life fluorescence polyvinyl chloride sheeting | — | 2001-11-27 |
| 6191200 | Extended life fluorescence polyvinyl chloride sheeting | — | 2001-02-20 |
| 6114011 | Retroreflective structure | David C. Martin, William P. Rowland | 2000-09-05 |
| 5831766 | Retroreflective structure | David C. Martin, William P. Rowland | 1998-11-03 |
| 5805339 | Retroreflective structure | David C. Martin, William P. Rowland | 1998-09-08 |
| 5786066 | Retroreflective structure | David C. Martin, William P. Rowland | 1998-07-28 |
| 5642222 | Elastomeric retroreflective structure | — | 1997-06-24 |
| 5637173 | Method for forming a retroreflective structure having free-standing prisms | David C. Martin | 1997-06-10 |
| 5491586 | Elastomeric retroreflective structure | — | 1996-02-13 |
| 5020791 | Aquatic exercise device | — | 1991-06-04 |