Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547939 | Adjustable shadow mask for improving uniformity of film deposition using multiple monitoring points along radius of substrate | Paul Hsueh, Shyang-Jye Chang, Michael Ma, Jack Hsu, Abraham C. Ma | 2003-04-15 |
| 5651176 | Vibratory feeder trays and synchronous mass production apparatus for circuit board fabrication | Abraham C. Ma, Paul Hsueh | 1997-07-29 |