Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8953161 | Optical spectrum analyzer with continuously rotating tunable filter | Yung-Chieh Hsieh | 2015-02-10 |
| 8270067 | Sagnac delay-line interferometer for DPSK demodulation | Yung-Chieh Hsieh | 2012-09-18 |
| 7961316 | Optical spectrum analyzer with continuously rotating tunable filter | Yung-Chieh Hsieh | 2011-06-14 |
| 7408713 | Step-phase interferometric optical interleaver | Yung-Chieh Hsieh | 2008-08-05 |
| 7286757 | Optical performance monitoring device | Yung-Chieh Hsieh | 2007-10-23 |
| 7092162 | Bandwidth enhancement device | Yung-Chieh Hsieh | 2006-08-15 |
| 6909549 | Tunable filter for optical add/drop module | Yung-Chieh Hsieh, Hong Li, Dar-Yuan Song | 2005-06-21 |
| 6816315 | Optical path length tuner | Yung-Chieh Hsieh, Dar-Yuan Song | 2004-11-09 |
| 6714743 | Wide range tunable filter | Yung-Chieh Hsieh, Chang-Tsung Lin | 2004-03-30 |
| 5689337 | Coaxial disc-mount for measuring flatness of computer-drive discs by interferometry | Joseph A. Lamb, Jr. | 1997-11-18 |
| 5633715 | Centroid approach for estimating modulation peak in broad-bandwidth interferometry | Erik Novak | 1997-05-27 |
| 5502566 | Method and apparatus for absolute optical measurement of entire surfaces of flats | James C. Wyant, Lian SHAO, Robert E. Parks | 1996-03-26 |
| 5471303 | Combination of white-light scanning and phase-shifting interferometry for surface profile measurements | Paul J. Caber | 1995-11-28 |
| 5452088 | Multimode-laser interferometric apparatus for eliminating background interference fringes from thin-plate measurements | — | 1995-09-19 |
| 5398112 | Method for testing an optical window with a small wedge angle | James C. Wyant | 1995-03-14 |
| 5321497 | Interferometric integration technique and apparatus to confine 2.pi. discontinuity | Yiping Xu | 1994-06-14 |
| 5064286 | Optical alignment system utilizing alignment spot produced by image inverter | John B. Hayes | 1991-11-12 |