Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10351427 | System for manufacturing high purity sulfuric acid | Goang-Cheng Chang, Yuen-Ming Kung, Hung-Wen Chan, Wei-Hsuan Hsu | 2019-07-16 |
| 9926198 | Method for manufacturing high purity sulfuric acid | Goang-Cheng Chang, Yuen-Ming Kung, Hung-Wen Chan, Wei-Hsuan Hsu | 2018-03-27 |
| 8721918 | Method for purifying fluoride etching solution by using hydroxide compound and ion exchange resin absorption | Kehchyn Ho | 2014-05-13 |
| 8586788 | Method for producing of ultra-clean and high-purity electronic grade acetic acid | Jiarong Zhan, I-Hsing Lin | 2013-11-19 |
| 8329046 | Methods for damage etch and texturing of silicon single crystal substrates | Cindy Dutton, Greg Bauer, Christopher Myers, Mehdi Balooch | 2012-12-11 |
| 8303925 | Manufacture method of ultra-pure sulfuric acid | Jiarong Zhan, I-Hsing Lin | 2012-11-06 |
| 8088266 | Electrodialysis method for purifying of silicate-containing potassium hydroxide etching solution | Goang-Cheng Chang, Wei-Liang Yang | 2012-01-03 |
| 6534027 | Process for producing ammonia with ultra-low metals content | Daniel J. Dershowitz, Ryan Mears, Jay Schnaith, Sadhana Mahapatra, Kevin Wadsworth | 2003-03-18 |