Learn more

GREYHAWK SYSTEMS INC

Overview
  • Total Patents
    34
About

GREYHAWK SYSTEMS INC has a total of 34 patent applications. Its first patent ever was published in 1986. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Canada. Its main competitors in its focus markets optics, audio-visual technology and control are LC TEC DISPLAYS AB, KAMADA KENTARO and SCREEN TECH LTD.

Patent filings in countries

World map showing GREYHAWK SYSTEMS INCs patent filings in countries

Patent filings per year

Chart showing GREYHAWK SYSTEMS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kahn Frederic J 12
#2 Loucks Bryan E 9
#3 Leff Jerry 7
#4 Stepner David E 6
#5 Haven Duane A 6
#6 Witte Kenneth G 5
#7 Slobodin David E 5
#8 Livoni Linden J 4
#9 Kendrick Paul N 4
#10 Turner James B 3

Latest patents

Publication Filing date Title
US5394254A Light valve projector assembly including fiber optic plate with fiber bundle perimeter less than twice as reflective as elsewhere
US5365287A Three color channel, two-elevation optics for a single lens video projector
US5374968A Optics for a single-lens video projector with color-specific polarization channels
US5084777A Light addressed liquid crystal light valve incorporating electrically insulating light blocking material of a-SiGe:H
US5111513A Projected image linewidth correction apparatus and method
US5080467A Biphenyl derivatives for photostabilization in pulsed optical darkening apparatus and method
WO9107689A1 Improved light addressed liquid crystal light valve incorporating electrically insulating light blocking material
WO9107851A1 Matrix addressed liquid crystal light valve
US5085506A Apparatus and method of forming and projecting high precision optical images
US5140448A Apparatus for and method of operation of smectic liquid crystal light valve having scattering centers
US5040879A Variable density optical filter
US5056895A Active matrix liquid crystal liquid crystal light valve including a dielectric mirror upon a leveling layer and having fringing fields
WO9010888A1 Variable density optical filter
WO9010047A1 Fabrication of printed wiring boards by projection imaging
US5083854A Spatial light modulator with improved aperture ratio
US5073830A High-efficiency polarized light source
US5014326A Projected image linewidth correction apparatus and method
US5116110A Partially coherent optical system with scattering type object
US5138368A Fabrication of printed wiring boards by projection imaging
US4969734A Apparatus and method of forming and projecting high precision optical images