Chen; Changhua

Patent Applications and Registrations

Patent applications and USPTO patent grants for Chen; Changhua.The latest application filed is for "portable wire cutting device for sampling steel ingot".

Company Profile

2.17.15

Chen; Changhua - Nanjing CN
Chen; Changhua - Beijing CN
Chen; Changhua - Jiangsu CN
Chen; Changhua - Carlingford AU
Chen; Changhua - San Jose CA
Chen; Changhua - Los Angeles CA
Chen; Changhua - late of San Jose CA
Chen, Changhua - Arcadia CA

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

Patent Activity

Patent	Date
Ultrasonic flaw detector test block Grant 11,366,084 - Chen , et al. June 21, 2	2022-06-21
Portable wire cutting device for sampling steel ingot Grant 11,045,888 - He , et al. June 29, 2	2021-06-29
Portable Wire Cutting Device For Sampling Steel Ingot App 20210107077 - HE; Lingjun ; et al.	2021-04-15
Dudou-shaped Test Block App 20210003537 - CHEN; Changhua ; et al.	2021-01-07
Polarization rotator-splitter/combiner based on silicon rib-type waveguides Grant 9,977,187 - Shi , et al. May 22, 2	2018-05-22
Optical coupler having anchored cantilever structure with multi-stage inverse taper core waveguide and fabrication method thereof Grant 9,946,029 - Shi , et al. April 17, 2	2018-04-17
Heel test block Grant 9,810,667 - Chen , et al. November 7, 2	2017-11-07
Silicon-based rib-waveguide modulator and fabrication method thereof Grant 9,429,776 - Shi , et al. August 30, 2	2016-08-30
Heel Test Block App 20160231292 - Zhang; Li ; et al.	2016-08-11
Electro-optic silicon modulator with longitudinally nonuniform modulation Grant 9,285,651 - Chen , et al. March 15, 2	2016-03-15
Optical Coupler Having Anchored Cantilever Structure With Multi-Stage Inverse Taper Core Waveguide And Fabrication Method Thereof App 20160041340 - Shi; Tuo ; et al.	2016-02-11
Silicon-Based Rib-Waveguide Modulator And Fabrication Method Thereof App 20150378185 - Shi; Tuo ; et al.	2015-12-31
Electro-optic silicon modulator with alternative capacitance-loaded coplanar waveguide structures Grant 9,223,185 - Chen , et al. December 29, 2	2015-12-29
Polarization Rotator-Splitter/Combiner Based On Silicon Rib-Type Waveguides App 20150338577 - Shi; Tuo ; et al.	2015-11-26
Electro-Optic Silicon Modulator With Capacitive Loading In Both Slots Of Coplanar Waveguides App 20150043866 - Chen; Changhua ; et al.	2015-02-12
Electro-Optic Silicon Modulator With Longitudinally Nonuniform Modulation App 20140241658 - Chen; Changhua ; et al.	2014-08-28
Systems and Methods for Providing a Computing Device Having a Secure Operating System Kernel App 20120216281 - Uner; Eric Ridvan ; et al.	2012-08-23
Formation of Ohmic contacts in III-nitride light emitting devices Grant 7,345,323 - Goetz , et al. March 18, 2	2008-03-18
Formation of Ohmic contacts in III-nitride light emitting devices App 20050167693 - Goetz, Werner K. ; et al.	2005-08-04
Formation of Ohmic contacts in III-nitride light emitting devices Grant 6,914,272 - Goetz , et al. July 5, 2	2005-07-05
Light emitting diode Grant 6,888,171 - Liu , et al. May 3, 2	2005-05-03
Minority carrier semiconductor devices with improved reliability Grant 6,794,731 - Stockman , et al. September 21, 2	2004-09-21
Formation of Ohmic contacts in III-nitride light emitting devices App 20040075097 - Goetz, Werner K. ; et al.	2004-04-22
Formation of ohmic contacts in III-nitride light emitting devices Grant 6,657,300 - Goetz , et al. December 2, 2	2003-12-02
InGaN/AlGaN/GaN multilayer buffer for growth of GaN on sapphire Grant 6,630,695 - Chen , et al. October 7, 2	2003-10-07
Epitaxial material grown laterally within a trench and method for producing same Grant 6,500,257 - Wang , et al. December 31, 2	2002-12-31
InGaN/A1GaN/GaN Multilayer Buffer for Growth of GaN on Sapphire App 20020175337 - Chen, Changhua ; et al.	2002-11-28
Light emitting diode App 20020079500 - Liu, Heng ; et al.	2002-06-27
Formation of ohmic contacts in III-nitride light emitting devices App 20020008243 - Goetz, Werner K. ; et al.	2002-01-24
Minority Carrier Semiconductor Devices With Improved Reliabilty App 20020003237 - STOCKMAN, STEPHEN A. ; et al.	2002-01-10
Method of strain engineering and impurity control in III-V nitride semiconductor films and optoelectronic devices Grant 6,274,399 - Kern , et al. August 14, 2	2001-08-14
Strain engineered and impurity controlled III-V nitride semiconductor films and optoelectronic devices Grant 6,194,742 - Kern , et al. February 27, 2	2001-02-27

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