Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Birdwell; William A.
Address:
Portland, OR
No. of patents:
4
Patents:












Patent Number Title Of Patent Date Issued
7009581 Dynamic diffractive optical transform March 7, 2006
A dynamic diffractive optical transform. An electric field pattern is created across a body of material, the material being characterized in that it has an optical transmission property which varies in response to of an electric potential applied across a portion thereof. The electric
6774871 Dynamic diffractive optical transform August 10, 2004
A dynamic diffractive optical transform. An electric field pattern is created across a body of material, the material being characterized in that it has an optical transmission property which varies in response to of an electric potential applied across a portion thereof. The electric
6437762 Dynamic diffractive optical transform August 20, 2002
A dynamic diffractive optical transform. An electric field pattern is created across a body of material, the material being characterized in that it has an optical transmission property which varies in response to of an electric potential applied across a portion thereof. The electric
5877876 Diffractive optical switch with polarizing beam splitters March 2, 1999
A dynamic diffractive optical transform. An electric field pattern is created across a body of material, the material being characterized in that it has an optical transmission property which varies in response to of an electric potential applied across a portion thereof. The electric










 
 
  Recently Added Patents
Integrated testing circuitry for high-frequency receiver integrated circuits
Electronic device with embedded antenna
Fast base station switching method and system, and hierarchical zone-based fast handoff approach
Signal processing apparatus and methods
Moulded tie strips
High damage threshold frequency conversion system
Self cleaning rake
  Randomly Featured Patents
Implantable tissue ischemia sensor
Product display device
Combined cover and countertop for cooler
Method and apparatus for creating a blow molded case
Multicasting method and apparatus
Surface configuration of a vehicle, toy and/or other replicas
Method and apparatus for real-time volume rendering from an arbitrary viewing direction
Collapsible fishing chair with detachable floats
Clamp having a reserve of capacity
Aliphatic olefin oxidation using catalyst containing Sn, P, O, Li