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GREYHAWK SYSTEMS, INC.
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MILPITAS, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Light valve projector assembly including fiber optic plate with fib...
Patent number
5,394,254
Issue date
Feb 28, 1995
Greyhawk Systems, Inc.
Liang T. Cheng
G02 - OPTICS
Information
Patent Grant
Optics for a single-lens video projector with color-specific polari...
Patent number
5,374,968
Issue date
Dec 20, 1994
Greyhawk Systems, Inc.
Duane A. Haven
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Three color channel, two-elevation optics for a single lens video p...
Patent number
5,365,287
Issue date
Nov 15, 1994
Greyhawk Systems, Inc.
David W. Vollmer
G02 - OPTICS
Information
Patent Grant
Apparatus for and method of operation of smectic liquid crystal lig...
Patent number
5,140,448
Issue date
Aug 18, 1992
Greyhawk Systems, Inc.
Matthew Bone
G02 - OPTICS
Information
Patent Grant
Fabrication of printed wiring boards by projection imaging
Patent number
5,138,368
Issue date
Aug 11, 1992
Greyhawk Systems, Inc.
Frederic J. Kahn
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Partially coherent optical system with scattering type object
Patent number
5,116,110
Issue date
May 26, 1992
Greyhawk Systems, Inc.
Frederic J. Kahn
G02 - OPTICS
Information
Patent Grant
Projected image linewidth correction apparatus and method
Patent number
5,111,513
Issue date
May 5, 1992
Greyhawk Systems, Inc.
James B. Turner
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Apparatus and method of forming and projecting high precision optic...
Patent number
5,085,506
Issue date
Feb 4, 1992
Greyhawk Systems, Inc.
Frederic J. Kahn
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Light addressed liquid crystal light valve incorporating electrical...
Patent number
5,084,777
Issue date
Jan 28, 1992
Greyhawk Systems, Inc.
David E. Slobodin
G02 - OPTICS
Information
Patent Grant
Spatial light modulator with improved aperture ratio
Patent number
5,083,854
Issue date
Jan 28, 1992
Greyhawk Systems, Inc.
Ronald F. Zampolin
G02 - OPTICS
Information
Patent Grant
Biphenyl derivatives for photostabilization in pulsed optical darke...
Patent number
5,080,467
Issue date
Jan 14, 1992
Greyhawk Systems, Inc.
Frederic J. Kahn
G02 - OPTICS
Information
Patent Grant
High-efficiency polarized light source
Patent number
5,073,830
Issue date
Dec 17, 1991
Greyhawk Systems, Inc.
Bryan E. Loucks
G02 - OPTICS
Information
Patent Grant
Active matrix liquid crystal liquid crystal light valve including a...
Patent number
5,056,895
Issue date
Oct 15, 1991
Greyhawk Systems, Inc.
Frederic J. Kahn
G02 - OPTICS
Information
Patent Grant
Variable density optical filter
Patent number
5,040,879
Issue date
Aug 20, 1991
Greyhawk Systems, Inc.
Duane A. Haven
G02 - OPTICS
Information
Patent Grant
Projected image linewidth correction apparatus and method
Patent number
5,014,326
Issue date
May 7, 1991
Greyhawk Systems, Inc.
James B. Turner
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Apparatus and method of forming and projecting high precision optic...
Patent number
4,969,734
Issue date
Nov 13, 1990
Greyhawk Systems, Inc.
Frederic J. Kahn
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method of and apparatus for mounting a mirror to a rotatable shaft
Patent number
4,802,752
Issue date
Feb 7, 1989
Greyhawk Systems, Inc.
Noah L. Anglin
G02 - OPTICS
Information
Patent Grant
Liquid crystal cell for image projections and method of operating same
Patent number
4,799,770
Issue date
Jan 24, 1989
Greyhawk Systems, Inc.
Frederick J. Kahn
G02 - OPTICS
Information
Patent Grant
Apparatus for detecting position of a rotating element using a two-...
Patent number
4,775,788
Issue date
Oct 4, 1988
Greyhawk Systems, Inc.
Robert P. Harshberger
G05 - CONTROLLING REGULATING
Information
Patent Grant
Method of and apparatus for controlling temperature of a liquid cry...
Patent number
4,775,221
Issue date
Oct 4, 1988
Greyhawk Systems, Inc.
James A. Baumgartner
G02 - OPTICS
Information
Patent Grant
Apparatus for positioning a rotating element
Patent number
4,705,996
Issue date
Nov 10, 1987
Greyhawk Systems
Robert P. Harshberger
G05 - CONTROLLING REGULATING
Information
Patent Grant
Apparatus for mounting two lasers to produce parallel or colinear b...
Patent number
4,701,018
Issue date
Oct 20, 1987
Greyhawk Systems, Inc.
Bryan E. Loucks
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73655906 - GREYHAWK
Serial number
73655906
Registration number
1557655
Filing date
Apr 14, 1987
GREYHAWK SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73655908 - SOFTPLOT
Serial number
73655908
Filing date
Apr 14, 1987
GREYHAWK SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73655905
Serial number
73655905
Registration number
1472934
Filing date
Apr 14, 1987
GREYHAWK SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73655907 - SOFTPLOT
Serial number
73655907
Filing date
Apr 14, 1987
GREYHAWK SYSTEMS, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments