Inventor · disambiguated record
Tzyy-Shuh Chang
Also filed as: CHANG TZYY-SHUH
13 granted patents·3 pending applications·112 citations·filing 2000–2016
91Inventor score
Top patents by PatentIndex Score
16 records- 0187US7627163B2Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal barOG TECHNOLOGIES INC·Filed 2008·Granted Dec 1, 2009·14 cites·47 claims
- 0285US6859285B1Optical observation device and method for observing articles at elevated temperaturesOG TECHNOLOGIES INC·Filed 2000·Granted Feb 22, 2005·30 cites·3 claims
- 0384US7324681B2Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal barOG TECHNOLOGIES INC·Filed 2005·Granted Jan 29, 2008·13 cites·34 claims
- 0482US7460703B2Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal barOG TECHNOLOGIES INC·Filed 2007·Granted Dec 2, 2008·9 cites·9 claims
- 0579US6950546B2Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal barOG TECHNOLOGIES INC·Filed 2002·Granted Sep 27, 2005·23 cites·2 claims
- 0673US7861567B2Method and apparatus to control the lateral motion of a long metal bar being formed by a mechanical process such as rolling or drawingOG TECHNOLOGIES INC·Filed 2007·Granted Jan 4, 2011·3 cites·17 claims
- 0766US6992756B1Apparatus and method for movement measurement and position tracking of long, non-textured metal objects at an elevated temperatureOG TECHNOLOGIES INC·Filed 2003·Granted Jan 31, 2006·13 cites·9 claims
- 0861US9291877B2Method and apparatus for uniformly focused ring lightOG TECHNOLOGIES INC·Filed 2013·Granted Mar 22, 2016·1 cites·12 claims
- 0961US8143885B2Surface flaw detection and verification on metal bars by Eddy current testing and imaging systemCHANG TZYY-SHUH·Filed 2009·Granted Mar 27, 2012·2 cites·11 claims
- 1057US7275404B1Method and an apparatus to control the lateral motion of a long metal bar being formed by a mechanical process such as rolling or drawingOG TECHNOLOGIES INC·Filed 2005·Granted Oct 2, 2007·1 cites·26 claims
- 1157US6661506B2Engine bearing inspection systemOG TECHNOLOGIES INC·Filed 2001·Granted Dec 9, 2003·2 cites·28 claims
- 1253US8233157B2Method and apparatus of a portable imaging-based measurement with self calibrationCHANG TZYY-SHUH·Filed 2010·Granted Jul 31, 2012·1 cites·25 claims
- 1345US2014152771A1Method and apparatus of profile measurementOG TECHNOLOGIES INC·Filed 2013·Application pending·0 cites
- 1442US2002008203A1Optical observation device and method for observing articles at elevated temperaturesFiled 2001·Application pending·0 cites
- 1539US9594293B2Method and apparatus for uniformly focused ring lightOG TECH INC·Filed 2016·Granted Mar 14, 2017·0 cites·2 claims
- 1639US2001030744A1Method of simultaneously applying multiple illumination schemes for simultaneous image acquisition in an imaging systemOG TECHNOLOGIES INC·Filed 2000·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →