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Hsun-Hau Huang
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Ann Arbor, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for uniformly focused ring light
Patent number
9,594,293
Issue date
Mar 14, 2017
Tzyy-Shuh Chang
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for uniformly focused ring light
Patent number
9,291,877
Issue date
Mar 22, 2016
OG Technologies, Inc.
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus of a portable imaging-based measurement with s...
Patent number
8,233,157
Issue date
Jul 31, 2012
OG Technologies, Inc.
Tzyy-Shuh Chang
G01 - MEASURING TESTING
Information
Patent Grant
Surface flaw detection and verification on metal bars by Eddy curre...
Patent number
8,143,885
Issue date
Mar 27, 2012
OG Technologies, Inc.
Tzyy-Shuh Chang
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus to control the lateral motion of a long metal...
Patent number
7,861,567
Issue date
Jan 4, 2011
OG Technologies, Inc.
Tzyy-Shuh Chang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Apparatus and method for detecting surface defects on a workpiece s...
Patent number
7,627,163
Issue date
Dec 1, 2009
OG Technologies, Inc.
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for detecting surface defects on a workpiece s...
Patent number
7,460,703
Issue date
Dec 2, 2008
OG Technologies, Inc.
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for detecting surface defects on a workpiece s...
Patent number
7,324,681
Issue date
Jan 29, 2008
OG Technologies, Inc.
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and an apparatus to control the lateral motion of a long met...
Patent number
7,275,404
Issue date
Oct 2, 2007
OG Technologies, Inc.
Tzyy-Shuh Chang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Apparatus and method for detecting surface defects on a workpiece s...
Patent number
6,950,546
Issue date
Sep 27, 2005
OG Technologies, Inc.
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
METHOD AND APPARATUS FOR UNIFORMLY FOCUSED RING LIGHT
Publication number
20160154292
Publication date
Jun 2, 2016
OG TECHNOLOGIES, INC.
Tzyy-Shuh Chang
G01 - MEASURING TESTING
Information
Patent Application
METHOD AND APPARATUS FOR UNIFORMLY FOCUSED RING LIGHT
Publication number
20140132793
Publication date
May 15, 2014
OG TECHNOLOGIES, INC.
Tzyy-Shuh Chang
G01 - MEASURING TESTING
Information
Patent Application
METHOD AND APPARATUS OF A PORTABLE IMAGING-BASED MEASUREMENT WITH S...
Publication number
20110075159
Publication date
Mar 31, 2011
Tzyy-Shuh Chang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SURFACE FLAW DETECTION AND VERIFICATION ON METAL BARS
Publication number
20100109659
Publication date
May 6, 2010
Tzyy-Shuh Chang
G01 - MEASURING TESTING
Information
Patent Application
APPARATUS AND METHOD FOR DETECTING SURFACE DEFECTS ON A WORKPIECE S...
Publication number
20090046923
Publication date
Feb 19, 2009
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS TO CONTROL THE LATERAL MOTION OF A LONG METAL...
Publication number
20080073401
Publication date
Mar 27, 2008
Tzyy-Shuh Chang
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
APPARATUS AND METHOD FOR DETECTING SURFACE DEFECTS ON A WORKPIECE S...
Publication number
20080063426
Publication date
Mar 13, 2008
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Apparatus and method for detecting surface defects on a workpiece s...
Publication number
20060002605
Publication date
Jan 5, 2006
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Apparatus and method for detecting surface defects on a workpiece s...
Publication number
20040105001
Publication date
Jun 3, 2004
OG TECHNOLOGIES, INC., a MICHIGAN CORPORATION,
Tzyy-Shuh Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE