Ma; Cheng-Hsin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ma; Cheng-Hsin.The latest application filed is for "high resolution phase shift mask".
- Ma; Cheng-Hsin - Redwood City CA
- Ma; Cheng-hsin - San Jose CA
| Patent | Date |
|---|---|
| High resolution phase shift mask Grant 8,399,158 - Choi , et al. March 19, 2 | 2013-03-19 |
| High Resolution Phase Shift Mask App 20120164563 - Choi; Chang Ju ; et al. | 2012-06-28 |
| Phase-shift photomask and patterning method App 20110159411 - Olson; Bennett ; et al. | 2011-06-30 |
| Dual damascene trench depth detection and control using voltage impedance RF probe App 20090001057 - Ma; Cheng-Hsin ; et al. | 2009-01-01 |
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