Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6849855 | Method for marking and identifying objects coated with up-conversion material | David B. Chang | 2005-02-01 |
| 6166815 | Constantly high sensitivity fiber optic interferometer sensor | Victor Vali, David B. Chang | 2000-12-26 |
| 5856811 | Visual display and helmet assembly | Ning Wu, David E. Schnelker, Jerome Robert Laskowski, Ronald Kent Reger, Francine Harriet Landau +1 more | 1999-01-05 |
| 5750901 | Optical fiber apparatus and method for measuring geological strains | Victor Vali, Kenn S. Bates | 1998-05-12 |
| 5657163 | Fiber optic illumination of HUD image source | Ning Wu, Jerome Robert Laskowski | 1997-08-12 |
| 5469519 | Optical waveguide image transmission system and method | David B. Chang, Victor Vali | 1995-11-21 |
| 5454047 | Optical method and system for generating expansion coefficients for an image processing function | David B. Chang | 1995-09-26 |
| 5416332 | Integrated test target assembly and compact collimator | Wallace W. Chen | 1995-05-16 |
| 5405680 | Selective emissivity coatings for interior temperature reduction of an enclosure | David B. Chang, Slava A. Pollack, Albert J. Jicha | 1995-04-11 |
| 5345522 | Reduced noise fiber optic towed array and method of using same | Victor Vali, David B. Chang | 1994-09-06 |
| 5324937 | Target for calibrating and testing infrared devices | Wallace W. Chen | 1994-06-28 |
| 5291032 | Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers | Victor Vali, David B. Chang, Albert F. Lawrence | 1994-03-01 |
| 5289266 | Noncontact, on-line determination of phosphate layer thickness and composition of a phosphate coated surface | David B. Chang, Victor Vali | 1994-02-22 |
| 5281813 | Laser rangefinder test system | — | 1994-01-25 |
| 5228856 | Optics approach to low side compliance simulation | David B. Chang | 1993-07-20 |
| 5212583 | Adaptive optics using the electrooptic effect | Victor Vali, David B. Chang, Bruce Youmans | 1993-05-18 |
| 5208766 | Automated evaluation of painted surface quality | David B. Chang, Michael E. Stickney | 1993-05-04 |
| 5132831 | Analog optical processing for the construction of fractal objects | David B. Chang, Norton L. Moise | 1992-07-21 |
| 5112121 | Display system for multiviewer training simulators | David B. Chang, Norton L. Moise | 1992-05-12 |
| 5076662 | Electro-optical IFS finder | David B. Chang, Norton L. Moise, James E. Drummond | 1991-12-31 |
| 5071209 | Variable acuity non-linear projection system | David B. Chang, Norton L. Moise | 1991-12-10 |
| 5050992 | Dispersive holographic spectrometer | James E. Drummond | 1991-09-24 |
| 5041735 | Miniature infrared test target | David B. Chang, Slava A. Pollack, Kenn S. Bates | 1991-08-20 |
| 5033203 | Curing oven using Wellsbach conversion | David B. Chang, James E. Drummond, Slava A. Pollack | 1991-07-23 |
| 5009502 | System of holographic optical elements for testing laser range finders | David B. Chang, James A. Arns, Gaylord E. Moss, Ronald T. Smith | 1991-04-23 |