Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6748138 | Optical grating fabrication | David W. Wang | 2004-06-08 |
| 6731659 | Frequency locker | David W. Wang | 2004-05-04 |
| 6718092 | Frequency detection, tuning and stabilization system | David W. Wang | 2004-04-06 |
| 6648615 | Inflator | — | 2003-11-18 |
| 6603629 | Non-contact servo track writing apparatus and method | — | 2003-08-05 |
| 6561420 | Information card system | Erica Tsai | 2003-05-13 |
| 6522604 | Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unit | — | 2003-02-18 |
| 6393625 | Plumbing device for a basin drainage | — | 2002-05-28 |
| 6316779 | Rotation and translation measurement with phase sensitive detection | — | 2001-11-13 |
| 6317200 | Positional measurement with normalized signal processing | MAO-SEN WANG | 2001-11-13 |
| 6266298 | Apparatus and method for inscribing, optically detecting, and using a clock pattern to write a servo pattern in an information storage unit | — | 2001-07-24 |
| 6052186 | Dual laser system for extended heterodyne interferometry | — | 2000-04-18 |
| 5995526 | Transverse Zeeman laser | Guang-Yao Yan | 1999-11-30 |
| 5991112 | Non-contact servotrack writing with phase sensitive detection | Hubert Song, Mervyn L. Hopson, Kam Fung Yan, Jean Chi | 1999-11-23 |
| 5920392 | Environmental parameter measurement device and method for laser interferometry | Mervyn I. Hopson | 1999-07-06 |
| 5774295 | Servo track writing technique | — | 1998-06-30 |
| 5394244 | Ambient air refracture index measuring device | — | 1995-02-28 |
| 5379115 | Differential interferometer | — | 1995-01-03 |
| 5315372 | Non-contact servo track writing apparatus having read/head arm and reference arm | — | 1994-05-24 |
| 5287982 | Structure for the external cap of a spout | — | 1994-02-22 |
| 5191391 | High resolution plane mirror interferometer | — | 1993-03-02 |
| 4955751 | Crossroad without traffic lights | — | 1990-09-11 |