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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US40656086 Oct 197627 Dic 1977Akzona IncorporatedProcess for the preparation of cationic paper sizing agents
US412080315 Nov 197617 Oct 1978Ethyl CorporationLubricant composition containing a dispersant which is a condensation product of a copolymer, polyamine and a polycarboxylic acid
US413941716 Nov 197713 Feb 1979Societe Nationale Elf AquitaineLubricating oil compositions containing copolymers of olefins or of olefins and non-conjugated dienes with unsaturated derivatives of cyclic imides
US442165316 Ago 198220 Dic 1983Hoffmann-La Roche Inc.Process for the deproteinization of biological fluids
US44710919 Ago 198211 Sep 1984The Lubrizol CorporationCombinations of carboxylic acylating agents substituted with olefin polymers of high and low molecular weight mono-olefins, derivatives thereof, and fuels and lubricants containing same
US44865739 Ago 19824 Dic 1984The Lubrizol CorporationCarboxylic acylating agents substituted with olefin polymers of high molecular weight mono-olefins, derivatives thereof, and fuels and lubricants containing same
US44891949 Ago 198218 Dic 1984The Lubrizol CorporationCarboxylic acylating agents substituted with olefin polymers of high/low molecular weight mono-olefins, derivatives thereof, and fuels and lubricants containing same
US45644609 Ago 198214 Ene 1986The Lubrizol CorporationHydrocarbyl-substituted carboxylic acylating agent derivative containing combinations, and fuels containing same
US457552612 Mar 198511 Mar 1986The Lubrizol CorporationHydrocarbyl substituted carboxylic acylaging agent derivative containing combinations, and fuels containing same
US459666319 Oct 198424 Jun 1986The Lubrizol CorporationCarboxylic acylating agents substituted with olefin polymers of high molecular weight mono-olefins, derivatives thereof, and fuels and lubricants containing same
US461334216 Oct 198523 Sep 1986The Lubrizol CorporationHydrocarbyl substituted carboxylic acylating agent derivative containing combinations, and fuels containing same
US462368416 Oct 198518 Nov 1986The Lubrizol CorporationHydrocarbyl substituted carboxylic acylating agent derivative containing combinations, and fuels containing same
US468605424 Jun 198611 Ago 1987Exxon Research & Engineering Co.Succinimide lubricating oil dispersant
US482043224 Jul 198711 Abr 1989Exxon Chemical Patents Inc.Lactone-modified, Mannich base dispersant additives useful in oleaginous compositions
US48661357 Oct 198612 Sep 1989Exxon Chemical Patents Inc.Heterocyclic amine terminated, lactone modified, aminated viscosity modifiers of improved dispersancy
US48661397 Oct 198612 Sep 1989Exxon Chemical Patents Inc.Lactone modified, esterified dispersant additives useful in oleaginous compositions
US48661407 Oct 198612 Sep 1989Exxon Chemical Patents Inc.Lactone modified adducts or reactants and oleaginous compositions containing same
US48661417 Oct 198612 Sep 1989Exxon Chemical Patents Inc.Lactone modified, esterfied or aminated additives useful in oleaginous compositions and compositions containing same
US49063947 Oct 19866 Mar 1990Exxon Chemical Patents Inc.Lactone modified mono-or dicarboxylic acid based adduct dispersant compositions
US49433826 Abr 198824 Jul 1990Exxon Chemical Patents Inc.Lactone modified dispersant additives useful in oleaginous compositions
US495427631 Ago 19894 Sep 1990Exxon Chemical Patents Inc.Lactone modified adducts or reactants and oleaginous compositions containing same
US495427731 Ago 19894 Sep 1990Exxon Chemical Patents Inc.Lactone modified, esterified or aminated additives useful in oleaginous compositions and compositions containing same
US49632756 Abr 198816 Oct 1990Exxon Chemical Patents Inc.Dispersant additives derived from lactone modified amido-amine adducts
US49717119 Ene 198920 Nov 1990Exxon Chemical Patents, Inc.Lactone-modified, mannich base dispersant additives useful in oleaginous compositions
US503232028 Feb 199116 Jul 1991Exxon Chemical Patents Inc.Lactone modified mono- or dicarboxylic acid based adduct dispersant compositions
US504162228 Nov 199020 Ago 1991The Lubrizol CorporationThree-step process for making substituted carboxylic acids and derivatives thereof
US511250729 Sep 198912 May 1992Chevron Research and Technology CompanyPolymeric dispersants having alternating polyalkylene and succinic groups
US522358210 Oct 199129 Jun 1993Bayer AktiengesellschaftPolymers capable of oxidative crosslinking
US567046211 May 199523 Sep 1997BP Chemicals (Additives) LimitedLubricating oil additives
US57169129 Abr 199610 Feb 1998Chevron Chemical CompanyPolyalkylene succinimides and post-treated derivatives thereof
US571910818 Nov 199617 Feb 1998BP Chemicals (Additives) LimitedLubricating oil additives
US58212051 Dic 199513 Oct 1998Chevron Chemical CompanyPolyalkylene succinimides and post-treated derivatives thereof
US584967629 Jul 199715 Dic 1998Chevron Chemical CompanyPost-treated derivatives of polyalkylene succinimides
US585196529 Jul 199722 Dic 1998Chevron Chemical CompanyDispersant compositions having polyalkylene succinimides
US585343429 Jul 199729 Dic 1998Chevron Chemical CompanyFuel compositions having polyalkylene succinimides and preparation thereof
US587208329 Jul 199716 Feb 1999Chevron Chemical CompanyPost-treated derivatives of polyalkylene succinimides
US588319622 May 199616 Mar 1999BASF AktiengesellschaftPreparation of polyalkenylsuccinic acid derivatives and their use as fuel and lubricant additives
US612732212 Nov 19963 Oct 2000Shell Oil CompanyDispersant additives
US635889227 Ene 199819 Mar 2002Chevron Chemical CompanyPolyalkylene succinimides and post-treated derivatives thereof
US69060119 Nov 200114 Jun 2005Chevron Oronite Company LLCPolymeric dispersants prepared from copolymers of low molecular weight polyisobutene and unsaturated acidic reagent