Issued Patents All Time
Showing 126–150 of 150 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5682075 | Porous gas reservoir electrostatic transducer | Brent Bolleman | 1997-10-28 |
| 5661839 | Light guide employing multilayer optical film | — | 1997-08-26 |
| 5650880 | Ferro-fluid mirror with shape determined in part by an inhomogeneous magnetic field | William L. H. Shuter, deceased | 1997-07-22 |
| 5642015 | Elastomeric micro electro mechanical systems | Brent Bolleman | 1997-06-24 |
| 5481637 | Hollow light guide for diffuse light | — | 1996-01-02 |
| 5450498 | High pressure low impedance electrostatic transducer | — | 1995-09-12 |
| 5339382 | Prism light guide luminaire with efficient directional output | — | 1994-08-16 |
| 5243506 | High aspect ratio light emitter having high uniformity and directionality | — | 1993-09-07 |
| 5186530 | Lighting structure having variable transmissivity internal light guide illumination | — | 1993-02-16 |
| 5168183 | Levitation system with permanent magnets and coils | — | 1992-12-01 |
| 5164033 | Electro-chemical etch device | — | 1992-11-17 |
| 4981838 | Superconducting alternating winding capacitor electromagnetic resonator | — | 1991-01-01 |
| 4937716 | Illuminating device having non-absorptive variable transmissivity cover | — | 1990-06-26 |
| 4912605 | Illumination system which reduces loss of visibility caused by lamp failure | — | 1990-03-27 |
| 4885783 | Elastomer membrane enhanced electrostatic transducer | Robert L. Clark, Francis L. Curzon | 1989-12-05 |
| 4883341 | Non-reflective graphic surface | — | 1989-11-28 |
| 4850665 | Method and apparatus for controlled emission of light from prism light guide | — | 1989-07-25 |
| 4834495 | Collapsible light pipe | Jonathan E. Scott, Malcolm Greaves | 1989-05-30 |
| 4787708 | Apparatus for continuously controlled emission of light from prism light guide | — | 1988-11-29 |
| 4750798 | Prism light guide luminaire | — | 1988-06-14 |
| 4662728 | Light guide apparatus | — | 1987-05-05 |
| 4649462 | Viewing angle color sensitive lighting accessory | Jerzy A. Dobrowolski | 1987-03-10 |
| 4615579 | Prism light guide luminaire | — | 1986-10-07 |
| 4542449 | Lighting panel with opposed 45.degree. corrugations | — | 1985-09-17 |
| 4260220 | Prism light guide having surfaces which are in octature | — | 1981-04-07 |