Van Sprang; Hendrik A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Van Sprang; Hendrik A..The latest application filed is for "light directionality sensor".
- Van Sprang; Hendrik A. - Waalre NL
- Van Sprang; Hendrik A. - Almelo NL
- Van Sprang; Hendrik A. - Eindhoven NL
| Patent | Date |
|---|---|
| Light directionality sensor Grant 8,462,325 - Van Bommel , et al. June 11, 2 | 2013-06-11 |
| Light Directionality Sensor App 20110242526 - Van Bommel; Ties ; et al. | 2011-10-06 |
| X-ray optical system Grant 7,194,067 - Van den Hoogenhof , et al. March 20, 2 | 2007-03-20 |
| X-ray optical system App 20040240620 - Hoogenhof, Waltherus W ; et al. | 2004-12-02 |
| Reflective liquid crystal display device with twist angle between 50.degree. and 68.degree. and the polarizer at the bisectrix Grant 5,490,003 - Van Sprang February 6, 1 | 1996-02-06 |
| Display device having wavelength-dependent birefringence compensation Grant 5,157,529 - Koopman , et al. October 20, 1 | 1992-10-20 |
| Liquid crystalline color display cell having a phosphorescent substrate and U.V.-absorbing dichroic dye Grant 4,830,469 - Breddels , et al. May 16, 1 | 1989-05-16 |
| Liquid crystal display device with a hysteresis Grant 4,664,483 - Van Sprang , et al. May 12, 1 | 1987-05-12 |
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