DC

David B. Chang

HA Hughes Aircraft: 60 patents #1 of 2,963Top 1%
OT Ojai Retinal Technology: 26 patents #2 of 3Top 70%
SI Southwest Research Institute: 4 patents #151 of 935Top 20%
UN Unknown: 3 patents #7,366 of 83,584Top 9%
RTX (Raytheon): 2 patents #5,307 of 15,912Top 35%
📍 Tustin, CA: #5 of 1,327 inventorsTop 1%
🗺 California: #2,061 of 386,348 inventorsTop 1%
Overall (All Time): #13,417 of 4,157,543Top 1%
104
Patents All Time

Issued Patents All Time

Showing 51–75 of 104 patents

Patent #TitleCo-InventorsDate
5291032 Fiber optic evanescent wave fuel gauge and leak detector using eccentric core fibers Victor Vali, 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, Victor Vali 1994-02-22
5270538 System for accurately detecting changes in temperature and pressure Victor Vali, Patrick C. Brownrigg 1993-12-14
5251482 Low frequency acoustic fuel sensor Kenn S. Bates 1993-10-12
5250326 Reduction of nonmetallic coating surface vertical irregularities by electrostatic pressure James E. Drummond, Alexander H. Joyce 1993-10-05
5237281 Ion drag air flow meter Jackie R. Webster, Keith Pearson 1993-08-17
5235179 Evanescent wave liquid level sensor with density compensation Victor Vali, Keith Pearson, Albert F. Lawrence 1993-08-10
5233673 Output steerable optical phased array Victor Vali, Albert F. Lawrence 1993-08-03
5228856 Optics approach to low side compliance simulation I-Fu Shih 1993-07-20
5223763 Wind power generator and velocimeter 1993-06-29
5222161 Method and apparatus for compressing a light pulse Victor Vali 1993-06-22
5220180 "Fiber optic fuel and liquid gauge having an open rigid ""J"" shaped tube" Victor Vali, Patrick C. Brownrigg 1993-06-15
5212583 Adaptive optics using the electrooptic effect Victor Vali, I-Fu Shih, Bruce Youmans 1993-05-18
5210779 Apparatus and method for focusing hard X-rays Victor Vali, Albert F. Lawrence 1993-05-11
5208766 Automated evaluation of painted surface quality I-Fu Shih, Michael E. Stickney 1993-05-04
5179028 Antibody coated crystal chemical sensor Victor Vali, Kenn S. Bates, Brian M. Pierce 1993-01-12
5177970 Refrigerator of air conditioner based on a fluid of electric dipoles 1993-01-12
5165242 Refrigerator or air conditioner based on a magnetic fluid 1992-11-24
5165084 System and method for measuring changes in sea level 1992-11-17
5164608 Plural wavelength fiber optic liquid level sensor for multiple liquids Victor Vali 1992-11-17
5160634 Desalinization system 1992-11-03
5155792 Low index of refraction optical fiber with tubular core and/or cladding Victor Vali 1992-10-13
5149957 Semiconductor-to-metal optical switch for power limitation in the infrared Brian M. Pierce, George D. Lawrence, Jonathan W. Arenberg 1992-09-22
5132831 Analog optical processing for the construction of fractal objects I-Fu Shih, Norton L. Moise 1992-07-21
5118932 Shaft rotation rate sensor with a diffraction grating producing a velocity-related beat frequency Patrick C. Brownrigg, Victor Vali 1992-06-02