Assignee
PQ CORP
US·96 granted patents·3 pending applications·2,238 citations·filing 1977–2019
Top patents by PatentIndex Score
99 records- 0196US4421562AManufacturing process for hollow microspheresPQ CORP·Filed 1983·Granted Dec 20, 1983·115 cites·6 claims
- 0296US4420442AManufacturing process for hollow microspheresPQ CORP·Filed 1982·Granted Dec 13, 1983·152 cites·6 claims
- 0395US7645718B2Microporous crystalline material comprising a molecular sieve or zeolite having an 8-ring pore opening structure and methods of making and using samePQ CORP·Filed 2008·Granted Jan 12, 2010·40 cites·30 claims
- 0495US5601798AProcess for preparing zeolite Y with increased mesopore volumePQ CORP·Filed 1994·Granted Feb 11, 1997·137 cites·21 claims
- 0594US4540629AHollow microspheres with organosilicon-silicate wallsPQ CORP·Filed 1984·Granted Sep 10, 1985·109 cites·22 claims
- 0694US4117105AProcess for preparing dispersible boehmite aluminaPQ CORP·Filed 1977·Granted Sep 26, 1978·77 cites·8 claims
- 0792US7883678B2Microporous crystalline material comprising a molecular sieve or zeolite having an 8-ring pore opening structure and methods of making and using samePQ CORP·Filed 2009·Granted Feb 8, 2011·15 cites·28 claims
- 0891US9517458B2Stabilized microporous crystalline material, the method of making the same, and the use for selective catalytic reduction of NOxPQ CORP·Filed 2012·Granted Dec 13, 2016·9 cites·35 claims
- 0989US7550404B2Wood-polymer-zeolite compositesPQ CORP·Filed 2005·Granted Jun 23, 2009·18 cites·63 claims
- 1089US5534348AHollow borosilicate microspheres and method of makingPQ CORP·Filed 1995·Granted Jul 9, 1996·104 cites·8 claims
- 1189US4138363ASilane-zeolite compositionsPQ CORP·Filed 1977·Granted Feb 6, 1979·32 cites·15 claims
- 1288US4379143ATopical liquid or ointmentPQ CORP·Filed 1982·Granted Apr 5, 1983·113 cites·11 claims
- 1387US4626550AZeolite for personal care productsPQ CORP·Filed 1985·Granted Dec 2, 1986·85 cites·6 claims
- 1487US4216125ADetergent compositions with silane-zeolite silicate builderPQ CORP·Filed 1978·Granted Aug 5, 1980·46 cites·14 claims
- 1586US7141232B2Preparation of molecular sieves involving spray dryingPQ CORP·Filed 2005·Granted Nov 28, 2006·7 cites·15 claims
- 1685US5391385AMethod of frying oil treatment using an alumina and amorphous silica compositionPQ CORP·Filed 1993·Granted Feb 21, 1995·96 cites·14 claims
- 1784US4752341APigment system for paperPQ CORP·Filed 1987·Granted Jun 21, 1988·51 cites·12 claims
- 1882US10100602B2Self-pressurizing soluble alkali silicate for use in sealing subterranean spacesPQ CORP·Filed 2016·Granted Oct 16, 2018·6 cites·6 claims
- 1982US9827560B2Small crystal ferrierite and method of making the samePQ CORP·Filed 2013·Granted Nov 28, 2017·5 cites·18 claims
- 2082US4508742ATreating beer to prevent chill haze and metal contaminationPQ CORP·Filed 1983·Granted Apr 2, 1985·27 cites·11 claims
- 2182US4347890AMethod for binding particulate materialsPQ CORP·Filed 1981·Granted Sep 7, 1982·48 cites·9 claims
- 2280US7538067B2Composition of, and process for preparing, silica xerogel for beer stabilizationPQ CORP·Filed 2007·Granted May 26, 2009·6 cites·26 claims
- 2380US6096820AAluminosilicate stabilized halogenated polymersPQ CORP·Filed 1999·Granted Aug 1, 2000·36 cites·32 claims
- 2480US4340642ASurface modified hollow microspheresPQ CORP·Filed 1980·Granted Jul 20, 1982·44 cites·5 claims
- 2579US5723402ASilicas with specific contents of cations as supports for olefin polymerization catalystsPQ CORP·Filed 1996·Granted Mar 3, 1998·55 cites·23 claims
- 2678US5409980AFlame retardant compositionsPQ CORP·Filed 1992·Granted Apr 25, 1995·30 cites·26 claims
- 2778US4411847AProcess for surface modified hollow microspheresPQ CORP·Filed 1982·Granted Oct 25, 1983·36 cites·12 claims
- 2876US6555151B2Process for making and using a low beverage soluble iron content adsorbent and composition made therebyPQ CORP·Filed 2001·Granted Apr 29, 2003·14 cites·22 claims
- 2976US6414071B1Aluminosilicate stabilized halogenated polymersPQ CORP·Filed 2000·Granted Jul 2, 2002·12 cites·12 claims
- 3076US6248911B1Process and composition for refining oils using metal-substituted silica xerogelsPQ CORP·Filed 1998·Granted Jun 19, 2001·55 cites·30 claims
- 3176US4362715ACosmetic vehiclePQ CORP·Filed 1980·Granted Dec 7, 1982·43 cites·13 claims
- 3273US7524536B2Surface protective compositionsPQ CORP·Filed 2005·Granted Apr 28, 2009·4 cites·17 claims
- 3373US5895770AOlefin polymerization catalysts with specific silica supportsPQ CORP·Filed 1997·Granted Apr 20, 1999·41 cites·16 claims
- 3471US5242677AStable zeolite of low unit cell constant and method of making samePQ CORP·Filed 1992·Granted Sep 7, 1993·27 cites·5 claims
- 3571US4349533AToothpaste containing pH-adjusted zeolitePQ CORP·Filed 1980·Granted Sep 14, 1982·34 cites·5 claims
- 3670US6641796B2Method for making zeolites and zeolite mixtures having enchanced cation exchange propertiesPQ CORP·Filed 2001·Granted Nov 4, 2003·12 cites·47 claims
- 3769US7497900B2Two-part borate, silicate and zinc compositions, and methods for treating wood productsPQ CORP·Filed 2005·Granted Mar 3, 2009·2 cites·13 claims
- 3869US7229655B2Composition of, and process for using, silica xerogel for beer stabilizationPQ CORP·Filed 2003·Granted Jun 12, 2007·6 cites·30 claims
- 3969US6887822B2Method for making silica supported, crush-resistant catalystsPQ CORP·Filed 2001·Granted May 3, 2005·10 cites·18 claims
- 4068US6001764AOlefin polymerization catalysts with specific silica supportsPQ CORP·Filed 1998·Granted Dec 14, 1999·21 cites·9 claims
- 4167US11786864B2Metal-containing zeolite beta for NOx reduction and methods of making the samePQ CORP·Filed 2018·Granted Oct 17, 2023·0 cites·12 claims
- 4267US4243545ADetergent compositions with silane-zeolite silicate builderPQ CORP·Filed 1979·Granted Jan 6, 1981·21 cites·6 claims
- 4366US5985238AProcess for preparing ferrieritePQ CORP·Filed 1997·Granted Nov 16, 1999·28 cites·9 claims
- 4466US4797294AChillproofing with magnesium silicate/silica gel agentsPQ CORP·Filed 1987·Granted Jan 10, 1989·17 cites·8 claims
- 4565US11040337B2Low-silica chabazite zeolites with high acidityPQ CORP·Filed 2019·Granted Jun 22, 2021·0 cites·24 claims
- 4665US7045475B2High refractive index glass beads for high retroreflectivity surfacesPQ CORP·Filed 2004·Granted May 16, 2006·9 cites·20 claims
- 4764US4230496AZinc rich paint vehiclePQ CORP·Filed 1978·Granted Oct 28, 1980·17 cites·8 claims
- 4860US5435987AProcess for preparing ammonium zeolites of low alkali metal contentPQ CORP·Filed 1993·Granted Jul 25, 1995·21 cites·1 claims
- 4958US4631193ATreating beer to prevent chill hazePQ CORP·Filed 1985·Granted Dec 23, 1986·13 cites·12 claims
- 5056US4766000APrevention of chill haze in beerPQ CORP·Filed 1987·Granted Aug 23, 1988·22 cites·10 claims
Showing the top 50 of 99 patent records by PatentIndex Score.
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