Ai; Chiayu

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ai; Chiayu.The latest application filed is for "optical spectrum analyzer with continuously rotating tunable filter".

Company Profile

0.16.9

Ai; Chiayu - Newark CA US
Ai; Chiayu - US
Ai; Chiayu - Tucson AZ

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Optical spectrum analyzer with continuously rotating tunable filter Grant 8,953,161 - Hsieh , et al. February 10, 2	2015-02-10
Optical Spectrum Analyzer With Continuously Rotating Tunable Filter App 20140125975 - HSIEH; YUNG-CHIEH ; et al.	2014-05-08
Sagnac delay-line interferometer for DPSK demodulation Grant 8,270,067 - Hsieh , et al. September 18, 2	2012-09-18
Wedge Pair For Phase Shifting App 20110317170 - Hsieh; Yung-Chieh ; et al.	2011-12-29
Optical Spectrum Analyzer With Continuously Rotating Tuynable Filter App 20110211194 - HSIEH; YUNG-CHIEH ; et al.	2011-09-01
Optical spectrum analyzer with continuously rotating tunable filter Grant 7,961,316 - Hsieh , et al. June 14, 2	2011-06-14
Step-phase interferometric optical interleaver Grant 7,408,713 - Hsieh , et al. August 5, 2	2008-08-05
Optical spectrum analyzer with continuously rotating tuynable filter App 20070285659 - Hsieh; Yung-Chieh ; et al.	2007-12-13
Optical performance monitoring device Grant 7,286,757 - Hsieh , et al. October 23, 2	2007-10-23
Michelson interferometer based delay line interferometers App 20060268277 - Hsieh; Yung-Chieh ; et al.	2006-11-30
Bandwidth enhancement device Grant 7,092,162 - Hsieh , et al. August 15, 2	2006-08-15
Variable dispersion step-phase interferometers App 20050270544 - Hsieh, Yung-Chieh ; et al.	2005-12-08
Tunable filter for optical add/drop module Grant 6,909,549 - Hsieh , et al. June 21, 2	2005-06-21
Optical path length tuner Grant 6,816,315 - Ai , et al. November 9, 2	2004-11-09
Wide range tunable filter Grant 6,714,743 - Hsieh , et al. March 30, 2	2004-03-30
Wide range tunable filter App 20030007225 - Hsieh, Yung-Chieh ; et al.	2003-01-09
Variable optical attenuator App 20020181929 - Hsieh, Yung-Chieh ; et al.	2002-12-05
Coaxial disc-mount for measuring flatness of computer-drive discs by interferometry Grant 5,689,337 - Lamb, Jr. , et al. November 18, 1	1997-11-18
Centroid approach for estimating modulation peak in broad-bandwidth interferometry Grant 5,633,715 - Ai , et al. May 27, 1	1997-05-27
Method and apparatus for absolute optical measurement of entire surfaces of flats Grant 5,502,566 - Ai , et al. March 26, 1	1996-03-26
Combination of white-light scanning and phase-shifting interferometry for surface profile measurements Grant 5,471,303 - Ai , et al. November 28, 1	1995-11-28
Multimode-laser interferometric apparatus for eliminating background interference fringes from thin-plate measurements Grant 5,452,088 - Ai September 19, 1	1995-09-19
Optical alignment system utilizing alignment spot produced by image inverter Grant 5,064,286 - Ai , et al. November 12, 1	1991-11-12

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