Christopher C. Chang

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Brentwood, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Optical encoder and method for measuring displacement information u...
- Patent number 8,436,293
- Issue date May 7, 2013
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Grant
Intensity-based optical encoder using digital diffractive optic reg...
- Patent number 8,044,339
- Issue date Oct 25, 2011
- Arcus Technology, Inc.
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Grant
Optical encoder with diffractive encoder member
- Patent number 7,566,863
- Issue date Jul 28, 2009
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Grant
Integrated motor device and method of setting and reading driver co...
- Patent number 7,417,399
- Issue date Aug 26, 2008
- Arcus Technology, Inc.
- Christopher C. Chang
- G05 - CONTROLLING REGULATING

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL ENCODER AND METHOD FOR MEASURING DISPLACEMENT INFORMATION U...
- Publication number 20100213358
- Publication date Aug 26, 2010
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Application
INTENSITY-BASED OPTICAL ENCODER USING DIGITAL DIFFRACTIVE OPTIC REG...
- Publication number 20090166519
- Publication date Jul 2, 2009
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL ENCODER WITH DIFFRACTIVE ENCODER MEMBER
- Publication number 20080100849
- Publication date May 1, 2008
- Christopher C. Chang
- G01 - MEASURING TESTING
Information Patent Application
Integrated motor device and method of setting and reading driver co...
- Publication number 20080075438
- Publication date Mar 27, 2008
- Christopher C. Chang
- G05 - CONTROLLING REGULATING