Assignee
PENNZOIL PROD CO
US·47 granted patents·1,671 citations·filing 1986–1999
Top patents by PatentIndex Score
47 records- 0198US5221534AHealth and beauty aid compositionsPENNZOIL PROD CO·Filed 1991·Granted Jun 22, 1993·412 cites·13 claims
- 0295US5871765ANon-aqueous controlled release pest and air care gel compositionPENNZOIL PROD CO·Filed 1997·Granted Feb 16, 1999·98 cites·6 claims
- 0395US5180865ABase oil for shear stable multi-viscosity lubricants and lubricants therefromPENNZOIL PROD CO·Filed 1991·Granted Jan 19, 1993·70 cites·4 claims
- 0493US5378249ABiodegradable lubricantPENNZOIL PROD CO·Filed 1993·Granted Jan 3, 1995·54 cites·18 claims
- 0593US4721823ALubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacturePENNZOIL PROD CO·Filed 1986·Granted Jan 26, 1988·34 cites·7 claims
- 0692US5188724AOlefin polymer pour point depressantsPENNZOIL PROD CO·Filed 1991·Granted Feb 23, 1993·54 cites·7 claims
- 0789US5436379ABase oil for shear stable multi-viscosity lubricants and lubricants therefromPENNZOIL PROD CO·Filed 1994·Granted Jul 25, 1995·42 cites·6 claims
- 0888US5879694ATransparent gel candlesPENNZOIL PROD CO·Filed 1997·Granted Mar 9, 1999·160 cites·10 claims
- 0987US5518590AElectrochemical sensors for motor oils and other lubricantsPENNZOIL PROD CO·Filed 1994·Granted May 21, 1996·74 cites·20 claims
- 1087US5012023ALubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacturePENNZOIL PROD CO·Filed 1989·Granted Apr 30, 1991·19 cites·17 claims
- 1184US5412007AStable petroleum resin-water emulsionPENNZOIL PROD CO·Filed 1994·Granted May 2, 1995·37 cites·11 claims
- 1284US4737305ADust suppressant composition and methodPENNZOIL PROD CO·Filed 1986·Granted Apr 12, 1988·50 cites·7 claims
- 1381US4929782ALubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacturePENNZOIL PROD CO·Filed 1989·Granted May 29, 1990·29 cites·8 claims
- 1478USD352904SBottlePENNZOIL PROD CO·Filed 1993·Granted Nov 29, 1994·33 cites·1 claims
- 1578US4873370AAlkylene diamines for use in friction and wear reducing compositionsPENNZOIL PROD CO·Filed 1987·Granted Oct 10, 1989·29 cites·10 claims
- 1678US4720555AHydrocarbyl anhydridesPENNZOIL PROD CO·Filed 1986·Granted Jan 19, 1988·17 cites·3 claims
- 1777US5705604ATire sealer and inflator compositionsPENNZOIL PROD CO·Filed 1996·Granted Jan 6, 1998·31 cites·19 claims
- 1876US5012022ALubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacturePENNZOIL PROD CO·Filed 1989·Granted Apr 30, 1991·20 cites·29 claims
- 1976US4863622APhosphorus-free antiwear/antifriction additivesPENNZOIL PROD CO·Filed 1988·Granted Sep 5, 1989·26 cites·20 claims
- 2075US6340467B1Solid and semi-solid hydrocarbon gels and uses thereofPENNZOIL PROD CO·Filed 1997·Granted Jan 22, 2002·41 cites·18 claims
- 2172US6066329ATransparent gel candlesPENNZOIL PROD CO·Filed 1999·Granted May 23, 2000·31 cites·20 claims
- 2272US5618912ATire sealer and inflator compositionsPENNZOIL PROD CO·Filed 1995·Granted Apr 8, 1997·25 cites·13 claims
- 2370US4849566ALubricants comprising novel cyclopentanes, cyclopentadienes, cyclopentenes, and mixtures thereof and methods of manufacturePENNZOIL PROD CO·Filed 1987·Granted Jul 18, 1989·20 cites·25 claims
- 2469US4824589ARust converting and removing compositionsPENNZOIL PROD CO·Filed 1986·Granted Apr 25, 1989·17 cites·16 claims
- 2567US5144095ASubstituted cyclopentadienes, methods of manufacture and usesPENNZOIL PROD CO·Filed 1991·Granted Sep 1, 1992·8 cites·11 claims
- 2666US4956111AMethacrylate pour point depressants and compositionsPENNZOIL PROD CO·Filed 1989·Granted Sep 11, 1990·18 cites·27 claims
- 2764US6130190ALiquid crystal and surfactant containing lubricant compositionsPENNZOIL PROD CO·Filed 1997·Granted Oct 10, 2000·21 cites·10 claims
- 2864US4891073AMethod of treating surface with water-in-oil emulsion compositionPENNZOIL PROD CO·Filed 1989·Granted Jan 2, 1990·25 cites·52 claims
- 2963US4897210ALithium complex grease thickener and high dropping point thickened greasePENNZOIL PROD CO·Filed 1988·Granted Jan 30, 1990·21 cites·20 claims
- 3061US4844829AMethacrylate pour point depressants and compositionsPENNZOIL PROD CO·Filed 1988·Granted Jul 4, 1989·15 cites·21 claims
- 3156US5672727ADithiocarbamoyl diols and borate esters thereof for use in lubricant compositionsPENNZOIL PROD CO·Filed 1996·Granted Sep 30, 1997·13 cites·8 claims
- 3256US5320761ALubricant fluid composition and methods for reducing frictional losses therewith in internal combustion enginesPENNZOIL PROD CO·Filed 1992·Granted Jun 14, 1994·22 cites·7 claims
- 3353US5728907ATetraalkylmethanes as synthetic lubricantsPENNZOIL PROD CO·Filed 1995·Granted Mar 17, 1998·13 cites·43 claims
- 3448US5308389AMetal appearance compositionPENNZOIL PROD CO·Filed 1992·Granted May 3, 1994·12 cites·15 claims
- 3547US5015507AMethod of converting rusted surface to a durable onePENNZOIL PROD CO·Filed 1989·Granted May 14, 1991·11 cites·15 claims
- 3645US5319144AProcess for productin of 4,4'-thiobis phenolsPENNZOIL PROD CO·Filed 1993·Granted Jun 7, 1994·3 cites·8 claims
- 3745US4784784ASuccinic acid esters and hydraulic fluids therefromPENNZOIL PROD CO·Filed 1987·Granted Nov 15, 1988·8 cites·10 claims
- 3842US5705175ANon-aqueous controlled release insect repellent and insecticide gelsPENNZOIL PROD CO·Filed 1996·Granted Jan 6, 1998·14 cites·6 claims
- 3942US4945017ARust conversion compositionPENNZOIL PROD CO·Filed 1989·Granted Jul 31, 1990·8 cites·15 claims
- 4040US5045119ATelephone cable cleaning and restoration fluidPENNZOIL PROD CO·Filed 1990·Granted Sep 3, 1991·7 cites·7 claims
- 4139US4999122ANon-aqueous lamellar liquid crystalline lubricantsPENNZOIL PROD CO·Filed 1988·Granted Mar 12, 1991·7 cites·13 claims
- 4238US5560853ADithiocarbamoyl diols and borate esters thereof for use in lubricant compositionsPENNZOIL PROD CO·Filed 1992·Granted Oct 1, 1996·4 cites·13 claims
- 4338US4957704AMethod of corrosion inhibition using hydrocarbyl polycarboxylates compositionsPENNZOIL PROD CO·Filed 1988·Granted Sep 18, 1990·4 cites·6 claims
- 4435US5210351APreparation of alkylated cyclopentadienesPENNZOIL PROD CO·Filed 1991·Granted May 11, 1993·3 cites·7 claims
- 4531US4959995AAutomated cold crank simulatorPENNZOIL PROD CO·Filed 1989·Granted Oct 2, 1990·7 cites·12 claims
- 4631US4867911ASurface treating water-in-oil emulsion composition and methodPENNZOIL PROD CO·Filed 1988·Granted Sep 19, 1989·3 cites·15 claims
- 4721US6074994ANon-aqueous solvent-free lamellar liquid crystalline lubricantsPENNZOIL PROD CO·Filed 1997·Granted Jun 13, 2000·1 cites·15 claims
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