Gengelbach; Robert D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Gengelbach; Robert D..The latest application filed is for "optical system".
- Gengelbach; Robert D. - Rochester NY
| Patent | Date |
|---|---|
| Optical system Grant 10,877,253 - Jacobson , et al. December 29, 2 | 2020-12-29 |
| Optical System App 20180149845 - JACOBSON; Benjamin A. ; et al. | 2018-05-31 |
| Optical system for batwing distribution Grant 9,557,033 - Jacobson , et al. January 31, 2 | 2017-01-31 |
| Optical system for batwing distribution App 20090225543 - Jacobson; Benjamin A. ; et al. | 2009-09-10 |
| Back-reflecting LED light source Grant 7,246,921 - Jacobson , et al. July 24, 2 | 2007-07-24 |
| Compact non-imaging light collector App 20070014035 - Jacobson; Benjamin D. ; et al. | 2007-01-18 |
| High-brightness LED-phosphor coupling Grant 7,108,386 - Jacobson , et al. September 19, 2 | 2006-09-19 |
| Compact non-imaging light collector Grant 7,068,446 - Jacobson , et al. June 27, 2 | 2006-06-27 |
| Back-reflecting LED light source App 20050168994 - Jacobson, Benjamin A. ; et al. | 2005-08-04 |
| Compact non-imaging light collector App 20040264004 - Jacobson, Benjamin D. ; et al. | 2004-12-30 |
| High-brightness LED-phosphor coupling App 20040228115 - Jacobson, Benjamin A. ; et al. | 2004-11-18 |
| Adjusting copy contrast and density Grant 4,310,237 - Gengelbach January 12, 1 | 1982-01-12 |
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