Hedong Yang

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Charlotte, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Achromatic optical system including diffractive optical element, an...
- Patent number 5,774,239
- Issue date Jun 30, 1998
- University of North Carolina
- Michael R. Feldman
- G02 - OPTICS
Information Patent Grant
Achromatic optical system including diffractive optical element
- Patent number 5,606,434
- Issue date Feb 25, 1997
- University of North Carolina
- Michael R. Feldman
- G02 - OPTICS
Information Patent Grant
Method and apparatus for confirming the identity of an individual p...
- Patent number 5,509,083
- Issue date Apr 16, 1996
- Abtahi; Nooral S.
- Nooral S. Abtahi
- G06 - COMPUTING CALCULATING COUNTING