Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9594293 | Method and apparatus for uniformly focused ring light | Tzyy-Shuh Chang, Changhung Lin | 2017-03-14 |
| 9291877 | Method and apparatus for uniformly focused ring light | Tzyy-Shuh Chang, Changhung Lin | 2016-03-22 |
| 8233157 | Method and apparatus of a portable imaging-based measurement with self calibration | Tzyy-Shuh Chang | 2012-07-31 |
| 8143885 | Surface flaw detection and verification on metal bars by Eddy current testing and imaging system | Tzyy-Shuh Chang, Kazuomi Tomita, Ryuichi Seki | 2012-03-27 |
| 7861567 | Method and apparatus to control the lateral motion of a long metal bar being formed by a mechanical process such as rolling or drawing | Tzyy-Shuh Chang, Chang-Hung Lin | 2011-01-04 |
| 7627163 | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar | Tzyy-Shuh Chang, Daniel Gutchess | 2009-12-01 |
| 7460703 | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar | Tzyy-Shuh Chang, Daniel Gutchess | 2008-12-02 |
| 7324681 | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar | Tzyy-Shuh Chang, Daniel Gutchess | 2008-01-29 |
| 7275404 | Method and an apparatus to control the lateral motion of a long metal bar being formed by a mechanical process such as rolling or drawing | Tzyy-Shuh Chang, Chang-Hung Lin | 2007-10-02 |
| 6950546 | Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar | Tzyy-Shuh Chang, Daniel Gutchess | 2005-09-27 |