Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7819013 | Method and apparatus for measuring oscillation amplitude of an ultrasonic device | Helen Lai Wa Chan, Tin Yan Lam, Chen-Hsiang Chao | 2010-10-26 |
| 7494601 | Piezoelectric ceramic composition and the method for preparing the same | Xiaoxing Wang, Helen Lai Wa Chan, Siu Hong Choy | 2009-02-24 |