Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6259089 | Integrated optics rotation sensor | Bruce Youmans, Colleen Fitzpatrick | 2001-07-10 |
| 6166815 | Constantly high sensitivity fiber optic interferometer sensor | I-Fu Shih, David B. Chang | 2000-12-26 |
| 6018390 | Integrated optics waveguide accelerometer with a proof mass adapted to exert force against the optical waveguide during acceleration | Bruce Youmans, Colleen Fitzpatrick | 2000-01-25 |
| 5750901 | Optical fiber apparatus and method for measuring geological strains | I-Fu Shih, Kenn S. Bates | 1998-05-12 |
| 5531116 | Apparatus and method for phase tomographic determination of fluid currents | David B. Chang, Donald H. Webb | 1996-07-02 |
| 5469519 | Optical waveguide image transmission system and method | David B. Chang, I-Fu Shih | 1995-11-21 |
| 5361383 | Optical fiber having internal partial mirrors and interferometer using same | David B. Chang | 1994-11-01 |
| 5345522 | Reduced noise fiber optic towed array and method of using same | David B. Chang, I-Fu Shih | 1994-09-06 |
| 5291032 | Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers | David B. Chang, I-Fu Shih, Albert F. Lawrence | 1994-03-01 |
| 5289266 | Noncontact, on-line determination of phosphate layer thickness and composition of a phosphate coated surface | I-Fu Shih, David B. Chang | 1994-02-22 |
| 5275635 | Coastal air wash system | James E. Drummond, Lauren M. Purcell, Norton L. Moise, Janet McWaid | 1994-01-04 |
| 5270538 | System for accurately detecting changes in temperature and pressure | David B. Chang, Patrick C. Brownrigg | 1993-12-14 |
| 5235179 | Evanescent wave liquid level sensor with density compensation | David B. Chang, Keith Pearson, Albert F. Lawrence | 1993-08-10 |
| 5233673 | Output steerable optical phased array | David B. Chang, Albert F. Lawrence | 1993-08-03 |
| 5224188 | Eccentric core optical fiber | — | 1993-06-29 |
| 5222161 | Method and apparatus for compressing a light pulse | David B. Chang | 1993-06-22 |
| 5220180 | "Fiber optic fuel and liquid gauge having an open rigid ""J"" shaped tube" | David B. Chang, Patrick C. Brownrigg | 1993-06-15 |
| 5212583 | Adaptive optics using the electrooptic effect | David B. Chang, I-Fu Shih, Bruce Youmans | 1993-05-18 |
| 5210779 | Apparatus and method for focusing hard X-rays | David B. Chang, Albert F. Lawrence | 1993-05-11 |
| 5179028 | Antibody coated crystal chemical sensor | Kenn S. Bates, David B. Chang, Brian M. Pierce | 1993-01-12 |
| 5164608 | Plural wavelength fiber optic liquid level sensor for multiple liquids | David B. Chang | 1992-11-17 |
| 5155792 | Low index of refraction optical fiber with tubular core and/or cladding | David B. Chang | 1992-10-13 |
| 5118932 | Shaft rotation rate sensor with a diffraction grating producing a velocity-related beat frequency | Patrick C. Brownrigg, David B. Chang | 1992-06-02 |
| 5100230 | True ground speed sensor | Patrick C. Brownrigg, David B. Chang | 1992-03-31 |
| 5099131 | Acquisition and testing of latent fingerprints using upconversion | Patrick C. Brownrigg, Slava A. Pollack | 1992-03-24 |