Mark O. Freeman

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Hsinchu, TW

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Patents Grantslast 30 patents

Information Patent Grant
Diffractive stack pickup head for optical disk drives and method to...
- Patent number 6,577,582
- Issue date Jun 10, 2003
- Industrial Technology Institute
- Mark O. Freeman
- G11 - INFORMATION STORAGE
Information Patent Grant
Diffractive stack pickup head for optical disk drives and method to...
- Patent number 6,351,443
- Issue date Feb 26, 2002
- Industrial Technology Research Institute
- Mark O. Freeman
- G11 - INFORMATION STORAGE
Information Patent Grant
Liquid crystal optical frequency shifter
- Patent number 5,739,908
- Issue date Apr 14, 1998
- The Regents of the University of Colorado
- Tyler Alan Brown
- G02 - OPTICS
Information Patent Grant
Single surface diffractive element for optical pickup heads
- Patent number 5,652,744
- Issue date Jul 29, 1997
- Industrial Technology Research Institute
- Mark O. Freeman
- G02 - OPTICS
Information Patent Grant
Holographic optical element for optical disk pickup head
- Patent number 5,523,993
- Issue date Jun 4, 1996
- Opto-Electronics & Systems Laboratories
- Mark O. Freeman
- G11 - INFORMATION STORAGE
Information Patent Grant
Chiral smectic liquid crystal optical modulators having variable re...
- Patent number 5,381,253
- Issue date Jan 10, 1995
- Board of Regents of University of Colorado
- Gary D. Sharp
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Diffractive stack pickup head for optical disk drives and method to...
- Publication number 20020054558
- Publication date May 9, 2002
- Mark O. Freeman
- H01 - BASIC ELECTRIC ELEMENTS