Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11486103 | Retroreflective traffic stripe 1,000X brighter than the current state of the art | — | 2022-11-01 |
| 11319680 | Retroreflective traffic stripe for both wet and dry weather conditions | — | 2022-05-03 |
| 11124932 | Retroreflective traffic stripe for both dry and wet weather conditions | — | 2021-09-21 |
| 10794021 | Retroreflective traffic stripe | — | 2020-10-06 |
| 10353187 | Stretched fresnel lens solar concentrator for space power, with cords, fibers, or wires strengthening the stretched lens | — | 2019-07-16 |
| 9660123 | Fresnel lens solar concentrator configured to focus sunlight at large longitudinal incidence angles onto an articulating energy receiver | — | 2017-05-23 |
| 9027292 | Passive collimating skylight | David Gelbaum, Almus J. McDanal, III, Don Spears | 2015-05-12 |
| 6363667 | Passive collimating tubular skylight | — | 2002-04-02 |
| 6111190 | Inflatable fresnel lens solar concentrator for space power | — | 2000-08-29 |
| 6075200 | Stretched Fresnel lens solar concentrator for space power | — | 2000-06-13 |
| 6031179 | Color-mixing lens for solar concentrator system and methods of manufacture and operation thereof | — | 2000-02-29 |
| 5648873 | Passive solar collector | Paul August Jaster | 1997-07-15 |
| 5505789 | Line-focus photovoltaic module using solid optical secondaries for improved radiation resistance | Lewis M. Fraas | 1996-04-09 |
| 5498297 | Photovoltaic receiver | Almus J. McDanal, III | 1996-03-12 |
| 5344497 | Line-focus photovoltaic module using stacked tandem-cells | Lewis M. Fraas | 1994-09-06 |
| 4719904 | Solar thermal receiver | — | 1988-01-19 |
| 4711972 | Photovoltaic cell cover for use with a primary optical concentrator in a solar energy collector | — | 1987-12-08 |
| 4672949 | Solar energy collector having an improved thermal receiver | — | 1987-06-16 |
| 4545366 | Bi-focussed solar energy concentrator | — | 1985-10-08 |