Assignee
GREYHAWK SYSTEMS INC
US·22 granted patents·855 citations·filing 1986–1994
Top patents by PatentIndex Score
22 records- 0195US5056895AActive matrix liquid crystal liquid crystal light valve including a dielectric mirror upon a leveling layer and having fringing fieldsGREYHAWK SYSTEMS INC·Filed 1990·Granted Oct 15, 1991·249 cites·21 claims
- 0286US5080467ABiphenyl derivatives for photostabilization in pulsed optical darkening apparatus and methodGREYHAWK SYSTEMS INC·Filed 1990·Granted Jan 14, 1992·58 cites·14 claims
- 0385US5374968AOptics for a single-lens video projector with color-specific polarization channelsGREYHAWK SYSTEMS INC·Filed 1993·Granted Dec 20, 1994·100 cites·11 claims
- 0482US5073830AHigh-efficiency polarized light sourceGREYHAWK SYSTEMS INC·Filed 1990·Granted Dec 17, 1991·59 cites·3 claims
- 0581US5084777ALight addressed liquid crystal light valve incorporating electrically insulating light blocking material of a-SiGe:HGREYHAWK SYSTEMS INC·Filed 1991·Granted Jan 28, 1992·58 cites·4 claims
- 0680US5085506AApparatus and method of forming and projecting high precision optical imagesGREYHAWK SYSTEMS INC·Filed 1990·Granted Feb 4, 1992·23 cites·7 claims
- 0779US5138368AFabrication of printed wiring boards by projection imagingGREYHAWK SYSTEMS INC·Filed 1989·Granted Aug 11, 1992·35 cites·25 claims
- 0879US4818098AApparatus and method of forming and projecting high precision optical imagesGREYHAWK SYSTEMS INC·Filed 1986·Granted Apr 4, 1989·18 cites·27 claims
- 0975US5083854ASpatial light modulator with improved aperture ratioGREYHAWK SYSTEMS INC·Filed 1990·Granted Jan 28, 1992·57 cites·20 claims
- 1066US5365287AThree color channel, two-elevation optics for a single lens video projectorGREYHAWK SYSTEMS INC·Filed 1993·Granted Nov 15, 1994·30 cites·10 claims
- 1164US5394254ALight valve projector assembly including fiber optic plate with fiber bundle perimeter less than twice as reflective as elsewhereGREYHAWK SYSTEMS INC·Filed 1994·Granted Feb 28, 1995·32 cites·18 claims
- 1262US4802752AMethod of and apparatus for mounting a mirror to a rotatable shaftGREYHAWK SYSTEMS INC·Filed 1988·Granted Feb 7, 1989·18 cites·10 claims
- 1361US5140448AApparatus for and method of operation of smectic liquid crystal light valve having scattering centersGREYHAWK SYSTEMS INC·Filed 1990·Granted Aug 18, 1992·25 cites·16 claims
- 1452US4969734AApparatus and method of forming and projecting high precision optical imagesGREYHAWK SYSTEMS INC·Filed 1988·Granted Nov 13, 1990·6 cites·11 claims
- 1552US4701018AApparatus for mounting two lasers to produce parallel or colinear beamsGREYHAWK SYSTEMS INC·Filed 1986·Granted Oct 20, 1987·15 cites·3 claims
- 1651US4775788AApparatus for detecting position of a rotating element using a two-grating moire patternGREYHAWK SYSTEMS INC·Filed 1986·Granted Oct 4, 1988·14 cites·6 claims
- 1749US5111513AProjected image linewidth correction apparatus and methodGREYHAWK SYSTEMS INC·Filed 1991·Granted May 5, 1992·14 cites·14 claims
- 1841US4799770ALiquid crystal cell for image projections and method of operating sameGREYHAWK SYSTEMS INC·Filed 1988·Granted Jan 24, 1989·11 cites·22 claims
- 1940US5116110APartially coherent optical system with scattering type objectGREYHAWK SYSTEMS INC·Filed 1989·Granted May 26, 1992·5 cites·14 claims
- 2039US5014326AProjected image linewidth correction apparatus and methodGREYHAWK SYSTEMS INC·Filed 1989·Granted May 7, 1991·6 cites·13 claims
- 2138US5040879AVariable density optical filterGREYHAWK SYSTEMS INC·Filed 1990·Granted Aug 20, 1991·8 cites·13 claims
- 2238US4775221AMethod of and apparatus for controlling temperature of a liquid crystal cellGREYHAWK SYSTEMS INC·Filed 1986·Granted Oct 4, 1988·14 cites·13 claims
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