Tigwell; David C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Tigwell; David C..The latest application filed is for "measuring bulk lifetime".
- Tigwell; David C. - Houston TX
- Tigwell; David C. - Spring TX
- Tigwell; David C. - Urbana IL
| Patent | Date |
|---|---|
| Measuring Bulk Lifetime App 20120286806 - Machuca; Francisco ; et al. | 2012-11-15 |
| Measuring Minority Carrier Lifetime App 20120081132 - Machuca; Francisco ; et al. | 2012-04-05 |
| Apparatus For Measuring Minority Carrier Lifetime And Method For Using The Same App 20110169520 - MILLER; G. Lorimer ; et al. | 2011-07-14 |
| Slotted Waveguide Acoustic Output Device and Method App 20090274313 - Klein; W. Richard ; et al. | 2009-11-05 |
| Remote control system Grant 6,021,319 - Tigwell February 1, 2 | 2000-02-01 |
| Method and system for high resolution time-of-flight measurements Grant 5,818,735 - Tigwell , et al. October 6, 1 | 1998-10-06 |
| Remote control system Grant 5,379,453 - Tigwell January 3, 1 | 1995-01-03 |
| Apparatus with a portable UHF radio transmitter remote for controlling one or more of infrared controlled appliances Grant 5,227,780 - Tigwell July 13, 1 | 1993-07-13 |
| Method and apparatus for tracking satellites in inclined orbits Grant 5,077,561 - Gorton , et al. December 31, 1 | 1991-12-31 |
| Stop light for a motorcyclist's helmet Grant 4,769,629 - Tigwell September 6, 1 | 1988-09-06 |
| Automatic multiple water sampler Grant 4,288,206 - Tigwell , et al. September 8, 1 | 1981-09-08 |
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