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John A. VanderPloeg
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Highland, MI, US
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last 30 patents
Information
Patent Grant
NW twisted nematic LCD with negative and tilted retarders on each s...
Patent number
6,567,143
Issue date
May 20, 2003
Guardian Industries Corp.
John A. VanderPloeg
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive uniaxial and negat...
Patent number
6,292,242
Issue date
Sep 18, 2001
OIS Optical Imaging Systems, Inc.
John A. VanderPloeg
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive and negative retar...
Patent number
6,023,317
Issue date
Feb 8, 2000
OIS Optical Imaging Systems, Inc.
Gang Xu
G02 - OPTICS
Information
Patent Grant
NW twisted nematic LCD with negative tilted retarders for improved...
Patent number
5,990,997
Issue date
Nov 23, 1999
OIS Optical Imaging Systems, Inc.
Michael R. Jones
G02 - OPTICS
Information
Patent Grant
LCD with diffuser having diffusing particles therein located betwee...
Patent number
5,963,284
Issue date
Oct 5, 1999
OIS Optical Imaging Systems, Inc.
Michael R. Jones
G02 - OPTICS
Information
Patent Grant
LCD with diffuser having diffusing particles therein located betwee...
Patent number
5,949,506
Issue date
Sep 7, 1999
OIS Optical Imaging Systems, Inc.
Michael R. Jones
G02 - OPTICS
Information
Patent Grant
NW twisted nematic LCD with negative tilted retarders on one side o...
Patent number
5,895,106
Issue date
Apr 20, 1999
OIS Optical Imaging Systems, Inc.
John A. VanderPloeg
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive uniaxial and nebat...
Patent number
5,859,681
Issue date
Jan 12, 1999
OIS Optical Imaging Systems, Inc.
John A. VanderPloeg
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive uniaxial and negat...
Patent number
5,793,458
Issue date
Aug 11, 1998
OIS Optical Imaging Systems, Inc.
John A. VanderPloeg
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive and negative retar...
Patent number
5,739,881
Issue date
Apr 14, 1998
OIS Optical Imaging Systems, Inc.
Gang Xu
G02 - OPTICS
Information
Patent Grant
Normally white twisted nematic LCD with positive and negative retar...
Patent number
5,657,140
Issue date
Aug 12, 1997
OIS Optical Imaging Systems, Inc.
Gang Xu
G02 - OPTICS
Information
Patent Grant
LCD with a pair of retardation films on one side of normally white...
Patent number
5,594,568
Issue date
Jan 14, 1997
OIS Optical Imaging Systems, Inc.
Adiel Abileah
G02 - OPTICS