Chow; Calvin Y.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Chow; Calvin Y..The latest application filed is for "determination of light absorption pathlength in a vertical-beam photometer".
- Chow; Calvin Y. - Portola Valley CA
| Patent | Date |
|---|---|
| Determination of light absorption pathlength in a vertical-beam photometer Grant 7,663,755 - Hafeman , et al. February 16, 2 | 2010-02-16 |
| Determination of Light Absorption Pathlength in a Vertical-Beam Photometer App 20080285036 - Hafeman; Dean G. ; et al. | 2008-11-20 |
| Determination of light absorption pathlength in a vertical-beam photometer App 20060238764 - Hafeman; Dean G. ; et al. | 2006-10-26 |
| Determination of light absorption pathlength in a vertical-beam photometer Grant 6,995,844 - Hafeman , et al. February 7, 2 | 2006-02-07 |
| Photometric device Grant 6,693,709 - Wechsler , et al. February 17, 2 | 2004-02-17 |
| Determination of light absorption pathlength in a vertical-beam photometer App 20030160961 - Hafeman, Dean ; et al. | 2003-08-28 |
| Photometric device App 20030081207 - Wechsler, Mark ; et al. | 2003-05-01 |
| Vertical-beam photometer for determination of light absorption pathlength Grant 6,496,260 - Hafeman , et al. December 17, 2 | 2002-12-17 |
| Determination of light absorption pathlength in a vertical-beam photometer Grant 6,404,501 - Hafeman , et al. June 11, 2 | 2002-06-11 |
| Photometric device Grant 6,151,111 - Wechsler , et al. November 21, 2 | 2000-11-21 |
| Photometric device Grant 5,557,398 - Wechsler , et al. September 17, 1 | 1996-09-17 |
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