Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6327083 | Rear projection screen with reduced speckle | Qiang Huang, Johannes C. Van De Ven | 2001-12-04 |
| 6226384 | Method and device for providing controlled access video signals without providing a signal in the clear | Alan P. Cavallerano, Carlo Basile | 2001-05-01 |
| 6222926 | Method and device for providing controlled access video signals without providing a signal in the clear | Alan P. Cavallerano, Carlo Basile | 2001-04-24 |
| 6147801 | Rear projection screen with reduced speckle | Qiang Huang, Johannes C. Van De Ven | 2000-11-14 |
| 5760955 | Rear projection screen with reduced speckle | Qiang Huang, Johannes C. Van De Ven | 1998-06-02 |
| 5168351 | Short focal length video color projector employing dichroic mirror block | Ralph H. Bradley, Leendert Vriens, William F. Guerinot | 1992-12-01 |
| 5146248 | Light valve projection system with improved illumination | Arne L. Duwaer | 1992-09-08 |
| 5084807 | Illumination system for LCD projection television | Thomas Stewart McKechnie, Joshua D. Eskin, Jeffrey A. Shimizu, Ralph H. Bradley, William F. Guerinot | 1992-01-28 |
| 5060058 | Modulation system for projection display | Wilhelmus Adrianus Gerardus Timmers | 1991-10-22 |
| 4956759 | Illumination system for non-imaging reflective collector | Roland Winston | 1990-09-11 |
| 4913529 | Illumination system for an LCD display system | Joshua D. Eskin | 1990-04-03 |
| 4912614 | Light valve projection system with non imaging optics for illumination | — | 1990-03-27 |
| 4864390 | Display system with equal path lengths | Thomas Stewart McKechnie, Joshua D. Eskin, Jeffrey A. Shimizu, Ralph H. Bradley, William F. Guerinot | 1989-09-05 |
| 4824227 | Optimum riser angle for fresnel lenses in projection screens | T. Stewart McKechnie | 1989-04-25 |
| 4773731 | One-piece projection screen | Ralph H. Bradley, William F. Guerinot, Thomas Stewart McKechnie | 1988-09-27 |
| 4730897 | Projection screen having high resolution and good mechanical stability | Thomas Stewart McKechnie | 1988-03-15 |
| 4679900 | Bulk diffuser for a projection television screen | Thomas Stewart McKechnie | 1987-07-14 |