Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7049500 | Portable pedal extension, step, footrest, and briefcase for small pianists | Jane Jeong Trenka | 2006-05-23 |
| 6120879 | Dual use reflective article | Toshitaka Nakajima, Mark D. Fiegen | 2000-09-19 |
| 5940212 | Cube corner article with altered inactive areas and method of making same | Norbert L. Johnson, Bruce D. Orensteen | 1999-08-17 |
| 5936770 | Dual orientation retroreflective sheeting | Susan K. Nestegard, Gerald M. Benson, Cheryl M. Frey, John C. Kelliher, James E. Lasch +1 more | 1999-08-10 |
| 5706132 | Dual orientation retroreflective sheeting | Susan K. Nestegard, Gerald M. Benson, Cheryl M. Frey, John C. Kelliher, James E. Lasch +1 more | 1998-01-06 |
| 5138488 | Retroreflective material with improved angularity | — | 1992-08-11 |