Assignee
RESEARCH FRONTIERS INC
US·50 granted patents·1 pending application·1,839 citations·filing 1975–2020
Top patents by PatentIndex Score
51 records- 0195US6429961B1Methods for retrofitting windows with switchable and non-switchable window enhancementsRESEARCH FRONTIERS INC·Filed 2000·Granted Aug 6, 2002·100 cites·61 claims
- 0295US5650872ALight valve containing ultrafine particlesRESEARCH FRONTIERS INC·Filed 1995·Granted Jul 22, 1997·154 cites·7 claims
- 0394US6416827B1SPD films and light valves comprising sameRESEARCH FRONTIERS INC·Filed 2000·Granted Jul 9, 2002·132 cites·30 claims
- 0493US5463491ALight valve employing a film comprising an encapsulated liquid suspension, and method of making such filmRESEARCH FRONTIERS INC·Filed 1992·Granted Oct 31, 1995·130 cites·24 claims
- 0593US5463492ALight modulating film of improved clarity for a light valveRESEARCH FRONTIERS INC·Filed 1992·Granted Oct 31, 1995·137 cites·28 claims
- 0692US4247175ALight valve containing improved light valve suspensionRESEARCH FRONTIERS INC·Filed 1978·Granted Jan 27, 1981·57 cites·13 claims
- 0791US6900923B2Siloxane matrix polymers and SPD light valve films incorporating sameRESEARCH FRONTIERS INC·Filed 2003·Granted May 31, 2005·47 cites·22 claims
- 0890US6936193B2Suspended particle device light valve filmRESEARCH FRONTIERS INC·Filed 2003·Granted Aug 30, 2005·49 cites·24 claims
- 0990US4422963ALight valve polarizing materials and suspensions thereofRESEARCH FRONTIERS INC·Filed 1978·Granted Dec 27, 1983·50 cites·2 claims
- 1090US4407565ALight valve suspension containing fluorocarbon liquidRESEARCH FRONTIERS INC·Filed 1981·Granted Oct 4, 1983·75 cites·26 claims
- 1189US5093041ALight-polarizing material based on ethylenediamine polyacetic acid derivativesRESEARCH FRONTIERS INC·Filed 1990·Granted Mar 3, 1992·34 cites·12 claims
- 1289US4273422ALight valve containing liquid suspension including polymer stabilizing systemRESEARCH FRONTIERS INC·Filed 1979·Granted Jun 16, 1981·48 cites·29 claims
- 1389US4270841ALight valve containing suspension of perhalide of alkaloid acid saltRESEARCH FRONTIERS INC·Filed 1978·Granted Jun 2, 1981·45 cites·12 claims
- 1488US6301040B1SPD films having improved properties and light valves comprising sameRESEARCH FRONTIERS INC·Filed 2000·Granted Oct 9, 2001·37 cites·20 claims
- 1588US4164365ALight valve for controlling the transmission of radiation comprising a cell and a stabilized liquid suspensionRESEARCH FRONTIERS INC·Filed 1978·Granted Aug 14, 1979·43 cites·25 claims
- 1686US7791788B2SPD light valves incorporating films comprising improved matrix polymers and methods for making such matrix polymersRESEARCH FRONTIERS INC·Filed 2006·Granted Sep 7, 2010·6 cites·26 claims
- 1785US4078856ALight valveRESEARCH FRONTIERS INC·Filed 1976·Granted Mar 14, 1978·38 cites·12 claims
- 1883US7361252B2Methods for laminating films for SPD light valves and SPD light valves incorporating such laminated filmsRESEARCH FRONTIERS INC·Filed 2004·Granted Apr 22, 2008·21 cites·51 claims
- 1983US6522446B2Anisometrically shaped metal particles, liquid suspensions and films thereof and light valves comprising sameRESEARCH FRONTIERS INC·Filed 2001·Granted Feb 18, 2003·24 cites·43 claims
- 2082US6606185B2SPD films and light valves comprising liquid suspensions of heat-reflective particles of mixed metal oxides and methods of making such particlesRESEARCH FRONTIERS INC·Filed 2001·Granted Aug 12, 2003·24 cites·10 claims
- 2182US5467217ALight valve suspensions and films containing UV absorbers and light valves containing the sameRESEARCH FRONTIERS INC·Filed 1993·Granted Nov 14, 1995·59 cites·24 claims
- 2280US7417785B2Methods and circuits for distributing power to SPD loadsRESEARCH FRONTIERS INC·Filed 2005·Granted Aug 26, 2008·19 cites·46 claims
- 2380US6987602B2Anisometrically shaped carbon and/or graphite particles, liquid suspensions and films thereof and light valves comprising sameRESEARCH FRONTIERS INC·Filed 2002·Granted Jan 17, 2006·20 cites·13 claims
- 2479US4772103ALight valve containing an improved suspension, and liquids thereforRESEARCH FRONTIERS INC·Filed 1986·Granted Sep 20, 1988·41 cites·9 claims
- 2577US4877313ALight-polarizing materials and suspensions thereofRESEARCH FRONTIERS INC·Filed 1989·Granted Oct 31, 1989·35 cites·16 claims
- 2676US6804040B2Method and device for controlling voltage provided to a suspended particle deviceRESEARCH FRONTIERS INC·Filed 2003·Granted Oct 12, 2004·31 cites·54 claims
- 2776US5002701ALight polarizing materials and suspensions thereofRESEARCH FRONTIERS INC·Filed 1989·Granted Mar 26, 1991·32 cites·16 claims
- 2875US6271956B1Method and materials for enhancing the adhesion of SPD films, and light valves comprising sameRESEARCH FRONTIERS INC·Filed 2000·Granted Aug 7, 2001·16 cites·20 claims
- 2975US5728251ALight modulating film of improved UV stability for a light valveRESEARCH FRONTIERS INC·Filed 1995·Granted Mar 17, 1998·54 cites·20 claims
- 3074US6897997B2Method and device for controlling voltage provided to a suspended particle deviceRESEARCH FRONTIERS INC·Filed 2004·Granted May 24, 2005·27 cites·42 claims
- 3173US4025163ALight valve, light valve suspension materials and suspension thereforRESEARCH FRONTIERS INC·Filed 1975·Granted May 24, 1977·18 cites·16 claims
- 3272US7920321B2SPD films and light valves incorporating overcoatings which enhance film adhesion to substrates, have good cohesion and protect against electrical short circuitsRESEARCH FRONTIERS INC·Filed 2008·Granted Apr 5, 2011·3 cites·20 claims
- 3370US6114405AUltraviolet radiation-curable light-modulating film for a light valve, and method of making sameRESEARCH FRONTIERS INC·Filed 1997·Granted Sep 5, 2000·46 cites·14 claims
- 3469US7847033B2Materials and methods for improving properties of SPD emulsions and filmsRESEARCH FRONTIERS INC·Filed 2006·Granted Dec 7, 2010·3 cites·16 claims
- 3567US5279773ALight valve incorporating a suspension stabilized with a block polymerRESEARCH FRONTIERS INC·Filed 1992·Granted Jan 18, 1994·29 cites·24 claims
- 3666US4113362ALight valve, light valve suspension materials and suspension thereforRESEARCH FRONTIERS INC·Filed 1977·Granted Sep 12, 1978·16 cites·29 claims
- 3765US2020398538A1Light valve films laminated between thin glass and plastic substratesRESEARCH FRONTIERS INC·Filed 2020·Application pending·0 cites
- 3863US5516463AMethod of making light-polarizing particlesRESEARCH FRONTIERS INC·Filed 1994·Granted May 14, 1996·26 cites·5 claims
- 3962US10807347B2Light valve films laminated between thin glass and plastic substratesRESEARCH FRONTIERS INC·Filed 2017·Granted Oct 20, 2020·0 cites·12 claims
- 4060US5130057ALight polarizing materials and suspensions thereofRESEARCH FRONTIERS INC·Filed 1990·Granted Jul 14, 1992·21 cites·12 claims
- 4159US6529312B1Anisometrically shaped carbon and/or graphite particles, liquid suspensions and films thereof and light valves comprising sameRESEARCH FRONTIERS INC·Filed 1999·Granted Mar 4, 2003·25 cites·20 claims
- 4257US5461506ALight valve suspensions containing a trimellitate or trimesate and light valves containing the sameRESEARCH FRONTIERS INC·Filed 1993·Granted Oct 24, 1995·20 cites·14 claims
- 4349US10137668B2Laminated glazings with improved moisture protectionRESEARCH FRONTIERS INC·Filed 2016·Granted Nov 27, 2018·0 cites·26 claims
- 4449US9417471B2Method and device for protecting objects from degradation by light with suspended particle device light valvesRESEARCH FRONTIERS INC·Filed 2014·Granted Aug 16, 2016·0 cites·36 claims
- 4549US4131334ALight polarizing materials, suspensions thereof, and process for manufacturing such suspensionsRESEARCH FRONTIERS INC·Filed 1977·Granted Dec 26, 1978·10 cites·19 claims
- 4648US6156239ALight polarizing materials, liquid suspensions and films thereof, and light valves incorporating sameRESEARCH FRONTIERS INC·Filed 1999·Granted Dec 5, 2000·16 cites·20 claims
- 4744US8922872B2SPD films with darker off-state transmittances and lighter on-state transmittancesRESEARCH FRONTIERS INC·Filed 2013·Granted Dec 30, 2014·0 cites·8 claims
- 4843US5325220ALight valve with low emissivity coating as electrodeRESEARCH FRONTIERS INC·Filed 1993·Granted Jun 28, 1994·10 cites·7 claims
- 4940US10394232B2Control system for SPD device and home automationRESEARCH FRONTIERS INC·Filed 2016·Granted Aug 27, 2019·0 cites·37 claims
- 5040US5111331AElectro-optical light modulatorRESEARCH FRONTIERS INC·Filed 1989·Granted May 5, 1992·8 cites·11 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when RESEARCH FRONTIERS INC files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →