Inventor · disambiguated record
Howard F. Efner
Also filed as: EFNER HOWARD F
36 granted patents·353 citations·filing 1980–1998
97Inventor score
Files withPHILLIPS PETROLEUM CO36
Top patents by PatentIndex Score
36 records- 0193US5559271AOrganic polysulfide compositions having reduced odorPHILLIPS PETROLEUM CO·Filed 1995·Granted Sep 24, 1996·58 cites·19 claims
- 0286US4560468AHydrofining process for hydrocarbon containing feed streamsPHILLIPS PETROLEUM CO·Filed 1984·Granted Dec 24, 1985·40 cites·22 claims
- 0382US5464931AOxidation of dimercaptans to organic disulfide polymersPHILLIPS PETROLEUM CO·Filed 1994·Granted Nov 7, 1995·17 cites·22 claims
- 0470US5661200AGlass-reinforced silane, carboxylic acid or anhydride-grafted branched alpha-olefin polymers with epoxy resinPHILLIPS PETROLEUM CO·Filed 1996·Granted Aug 26, 1997·20 cites·8 claims
- 0568US4954654AProcess for the preparation of secondary and tertiary aminesPHILLIPS PETROLEUM CO·Filed 1988·Granted Sep 4, 1990·8 cites·12 claims
- 0664US5245000APoly(arylene sulfide) polymer containing sulfone, ether and biphenyl groupsPHILLIPS PETROLEUM CO·Filed 1991·Granted Sep 14, 1993·13 cites·77 claims
- 0764US4737160AReaction products of amido-amine and epoxide useful as fuel additivesPHILLIPS PETROLEUM CO·Filed 1984·Granted Apr 12, 1988·15 cites·20 claims
- 0863US5091457APolyethylene terephthalate molding compositionsPHILLIPS PETROLEUM CO·Filed 1990·Granted Feb 25, 1992·18 cites·26 claims
- 0963US4636487AProcess for the preparation of promoted catalystsPHILLIPS PETROLEUM CO·Filed 1985·Granted Jan 13, 1987·17 cites·54 claims
- 1061US5068274ASecondary amides in polyethylene terephthalate molding compositionsPHILLIPS PETROLEUM CO·Filed 1990·Granted Nov 26, 1991·12 cites·70 claims
- 1160US5347018AProcess for producing sulfolane compoundsPHILLIPS PETROLEUM CO·Filed 1993·Granted Sep 13, 1994·9 cites·19 claims
- 1260US5028649APolyethylene terephthalate molding compounds with sodium stearate and polyester amidesPHILLIPS PETROLEUM CO·Filed 1990·Granted Jul 2, 1991·16 cites·44 claims
- 1359US4504280AFuel additives from SO2 treated mixtures of amides and esters derived from vegetable oil, tall oil acid, or aralkyl acidPHILLIPS PETROLEUM CO·Filed 1984·Granted Mar 12, 1985·11 cites·48 claims
- 1458US4923643AAntimony mercaptide esters and methods of preparing the samePHILLIPS PETROLEUM CO·Filed 1988·Granted May 8, 1990·5 cites·25 claims
- 1555US4612110AHydrofining process for hydrocarbon containing feed streamsPHILLIPS PETROLEUM CO·Filed 1984·Granted Sep 16, 1986·11 cites·23 claims
- 1652US5565517ASynthesis of organic polysulfide polymersPHILLIPS PETROLEUM CO·Filed 1994·Granted Oct 15, 1996·9 cites·39 claims
- 1751US5030680ARapidly crystallizing polyethylene terephthalate blendsPHILLIPS PETROLEUM CO·Filed 1990·Granted Jul 9, 1991·8 cites·26 claims
- 1851US4335004ALubricating compositions containing diesters of dimercapto ethersPHILLIPS PETROLEUM CO·Filed 1980·Granted Jun 15, 1982·6 cites·8 claims
- 1948US4582594AHydrofining process for hydrocarbon containing feed streamsPHILLIPS PETROLEUM CO·Filed 1984·Granted Apr 15, 1986·8 cites·37 claims
- 2047US5430079AGlass-reinforced grafted branched higher alpha-olefin polymersPHILLIPS PETROLEUM CO·Filed 1994·Granted Jul 4, 1995·4 cites·16 claims
- 2145US5213785AContinuous antimony pentoxide productionPHILLIPS PETROLEUM CO·Filed 1991·Granted May 25, 1993·7 cites·14 claims
- 2243US5308893AGlass-reinforced grafted branched higher alpha-olefin polymersPHILLIPS PETROLEUM CO·Filed 1992·Granted May 3, 1994·6 cites·6 claims
- 2342US5932671APolymerization processPHILLIPS PETROLEUM CO·Filed 1997·Granted Aug 3, 1999·6 cites·5 claims
- 2439US5536706AUse of butadiene-styrene copolymers in crude oilsPHILLIPS PETROLEUM CO·Filed 1994·Granted Jul 16, 1996·4 cites·41 claims
- 2538US5545714AOxidation of dimercaptans to organic disulfide polymersPHILLIPS PETROLEUM CO·Filed 1995·Granted Aug 13, 1996·3 cites·23 claims
- 2638US5011957AAntimony mercaptide esters and methods of preparing the samePHILLIPS PETROLEUM CO·Filed 1990·Granted Apr 30, 1991·1 cites·17 claims
- 2737US5514736AGlass-reinforced branched higher alpha-olefin polymersPHILLIPS PETROLEUM CO·Filed 1995·Granted May 7, 1996·2 cites·19 claims
- 2836US5179193ABranched aromatic sulfide sulfone polymer productionPHILLIPS PETROLEUM CO·Filed 1991·Granted Jan 12, 1993·2 cites·22 claims
- 2936US5045367AReinforced plastic comprising fibrous reinforcement treated with poly(arylene sulfide sulfone) polymer containing ether groupsPHILLIPS PETROLEUM CO·Filed 1990·Granted Sep 3, 1991·5 cites·24 claims
- 3034US6124383ACement composition and process therewithPHILLIPS PETROLEUM CO·Filed 1998·Granted Sep 26, 2000·4 cites·35 claims
- 3132US5079079AReinforced plastic comprising an arylene sulfide sulfone copolymer matrixPHILLIPS PETROLEUM CO·Filed 1990·Granted Jan 7, 1992·2 cites·20 claims
- 3231US5403502ALubricating additive comprising a molybdenum (VI) hydroxymercaptidePHILLIPS PETROLEUM CO·Filed 1984·Granted Apr 4, 1995·0 cites·12 claims
- 3331US5194506APolyethylene terephthalate compositions with arylene sulfide random copolymersPHILLIPS PETROLEUM CO·Filed 1990·Granted Mar 16, 1993·4 cites·7 claims
- 3431US4729839AWater soluble lubricating additivesPHILLIPS PETROLEUM CO·Filed 1986·Granted Mar 8, 1988·1 cites·44 claims
- 3530US5583180AGlass-reinforced branched higher alpha-olefin polymersPHILLIPS PETROLEUM CO·Filed 1995·Granted Dec 10, 1996·1 cites·19 claims
- 3629US4447246ADiesel fuelPHILLIPS PETROLEUM CO·Filed 1983·Granted May 8, 1984·0 cites·12 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →