Patents by Inventor Richard E. Cherpeck

Richard E. Cherpeck has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5466268
    Abstract: Polyalkyl and polyalkenyl aromatic amides having the formula: ##STR1## or a fuel-soluble salt thereof; wherein A is hydroxy, nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 is hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.4 is hydrogen or an acyl group of the formula: ##STR2## wherein A.sub.1 is hydroxy, nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.6 and R.sub.7 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: November 14, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5466872
    Abstract: Fuel compositions containing a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective deposit-controlling amount of a poly(oxyalkylene) aromatic ether having the formula: ##STR1## where A.sub.1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl, or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl and each R.sub.3 and R.sub.4 is independently selected in each --O--CHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to 100 carbon atoms, phenyl, aralkyl having 7 to 100 carbon atoms or alkaryl having 7 to 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: November 14, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5462567
    Abstract: A fuel additive composition comprising:(a) a poly(oxyalkylene) hydroxyaromatic ester having the formula: ##STR1## or a fuel-soluble salt thereof; where R.sub.1 and R.sub.2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 and R.sub.4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group having the formula: ##STR2## where R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; R.sub.7 and R.sub.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: October 31, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5441544
    Abstract: A fuel additive having the formula: ##STR1## where A.sub.1 is a thioether, a sulfoxide, a sulfone, a sulfonic acid, a sulfonamide, a nitrile, a carboxylic acid or ester, or a carboxamide; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl, or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl and each R.sub.3 and R.sub.4 is independently selected in each --O--CHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to 100 carbon atoms, phenyl, aralkyl having 7 to 100 carbon atoms or alkaryl having 7 to 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, aralkyl having 7 to 36 carbon atoms or alkaryl having 7 to 36 carbon atoms; n is an integer from 5 to 100; and x is an integer from 0 to 10.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: August 15, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5427591
    Abstract: Poly(oxyalkylene) hydroxyaromatic esters having the formula: ##STR1## or a fuel-soluble salt thereof; where R.sub.1 and R.sub.2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 and R.sub.4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group having the formula: ##STR2## wherein R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; R.sub.7 and R.sub.8 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; n is an integer from 5 to 100; and x and y are each independently an integer from 0 to 10.The poly(oxyalkylene) hydroxyaromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: June 27, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5413615
    Abstract: Polyalkyl hydroxy and amino aromatic carbamates having the formula: ##STR1## or a fuel-soluble salt thereof; wherein X is hydroxy or amino;R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, lower alkoxy having 1 to 6 carbon atoms, nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms;R.sub.3 is hydrogen or lower alkyl having 1 to 6 carbon atoms; andR.sub.4 is a polyalkyl group having an average molecular weight in the range of about 400 to 5,000.The polyalkyl hydroxy and amino aromatic carbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: May 9, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5413614
    Abstract: Mannich condensation products prepared by the condensation of a compound of the formula: ##STR1## wherein R is hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.1 is hydrogen, hydroxy, lower alkyl or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl; R.sub.5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl, or an acyl group of the formula: ##STR2## wherein R.sub.6 is alkyl, phenyl, aralkyl or alkaryl; and n is an integer from 5 to 100;with an aldehyde and a nitrogen base selected from ammonia, lower alkylamine, a polyamine and mixtures thereof.The Mannich condensation products and their fuel soluble salts are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: May 9, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5409507
    Abstract: Fuel compositions containing a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective deposit-controlling amount of a poly(oxyalkylene) aromatic ether having the formula: ##STR1## where A.sub.1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl, or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl and each R.sub.3 and R.sub.4 is independently selected in each --O--CHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to 100 carbon atoms, phenyl, aralkyl having 7 to 100 carbon atoms or alkaryl having 7 to 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: April 25, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5407452
    Abstract: Fuel compositions containing a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective deposit-controlling amount of a poly(oxyalkylene) aromatic ester having the formula: ##STR1## where A.sub.1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl, or lower alkoxy; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl and each R.sub.3 and R.sub.4 is independently selected in each --O--CHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to 100 carbon atoms, phenyl, aralkyl having 7 to 100 carbon atoms or alkaryl having 7 to 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, aralkyl having 7 to 36 carbon atoms or alkaryl having 7 to 36 carbon atoms; R.sub.7 and R.sub.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 18, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5405418
    Abstract: A fuel additive composition comprising:(a) a fuel-soluble aliphatic hydrocarbyl-substituted amine having at least one basic nitrogen atom wherein the hydrocarbyl group has a number average molecular weight of about 700 to 3,000;(b) a polyolefin polymer of a C.sub.2 to C.sub.6 monoolefin, wherein the polymer has a number average molecular weight of about 350 to 3,000; and(c) an aromatic di- or tri-carboxylic acid ester of the formula: ##STR1## wherein R is an alkyl group of 4 to 20 carbon atoms, and x is 2 or 3.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: April 11, 1995
    Assignee: Chevron Chemical Company
    Inventors: Matthew H. Ansarie, Richard E. Cherpeck, Randy G. Chevalier, Jeffrey J. Toman
  • Patent number: 5405419
    Abstract: A fuel additive composition comprising:(a) a fuel-soluble aliphatic hydrocarbyl-substituted amine having at least one basic nitrogen atom wherein the hydrocarbyl group has a number average molecular weight of about 700 to 3,000;(b) a polyolefin polymer of a C.sub.2 to C.sub.6 monoolefin, wherein the polymer has a number average molecular weight of about 350 to 3,000; and(c) a hydrocarbyl-terminated poly(oxyalkylene) monool having an average molecular weight of about 500 to about 5,000, wherein the oxyalkylene group is a C.sub.2 to C.sub.5 oxyalkylene group and the hydrocarbyl group is a C.sub.1 to C.sub.30 hydrocarbyl group.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: April 11, 1995
    Assignee: Chevron Chemical Company
    Inventors: Matthew H. Ansari, Richard E. Cherpeck, Randy G. Chevalier, Jeffrey J. Toman
  • Patent number: 5399178
    Abstract: Mannich condensation products prepared by the condensation of a compound having the formula: ##STR1## wherein R is hydrogen, lower alkyl having 1 through 6 carbon atoms, hydroxy or lower alkoxy having 1 through 6 atoms; R.sup.1 is polyalkyl having an average molecular weight of about from 400 to 5000 and n is 0 or a whole integer of from 1 through 10 with ammonia, alkylamine, or polyamine and an aldehyde.The condensation products and their fuel-soluble salts are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: March 21, 1995
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5393309
    Abstract: A fuel additive composition comprising (a) a polyisobutenyl succinimide derived from ethylenediamine or diethylenetriamine, wherein the polyisobutenyl group has an average molecular weight of about 1200 to 1500 and (b) a nonvolatile paraffinic or naphthenic carrier oil, or a mixture thereof.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 28, 1995
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5380345
    Abstract: Polyalkyl nitro and amino aromatic esters having the formula: ##STR1## wherein A.sub.1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R.sub.1 and R.sub.2 are independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 is a polyalkyl group having a weight average molecular weight in the range of about 450 to 5,000; and x is an integer from 0 to 10.The polyalkyl nitro and amino aromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: January 10, 1995
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5366519
    Abstract: A fuel additive composition comprising:(a) a poly(oxyalkylene) hydroxyaromatic ester having the formula: ##STR1## or a fuel-soluble salt thereof; where R.sub.1 and R.sub.2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 and R.sub.4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group having the formula: ##STR2## where R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; R.sub.7 and R.sub.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: November 22, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5366517
    Abstract: A fuel additive composition comprising:(a) a poly(oxyalkylene) hydroxyaromatic ether having the formula: ##STR1## or a fuel-soluble salt thereof; where R.sub.1 and R.sub.2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R.sub.3 and R.sub.4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R.sub.5 is hydrogen, alkyl having 1 to 30 carbon atoms, phenyl, aralkyl or alkaryl having 7 to 36 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.6 is alkyl having 1 to 30 carbon atoms, phenyl, or aralkyl or alkaryl having 7 to 36 carbon atoms; n is an integer from 5 to 100; and x is an integer from 0 to 10; and(b) a poly(oxyalkylene) amine having at least one basic nitrogen atom and a sufficient number of oxyalkylene units to render the poly(oxyalkylene) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: November 22, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5306315
    Abstract: Poly(alkylene ether) amines having the formula: ##STR1## wherein A is an amine moiety having at least one basic nitrogen atom; R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the poly(vinyl ether) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range; R.sub.2 is an alkylene group having 2 to about 8 carbon atoms; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each independently hydrogen or a lower alkyl group having 1 to about 4 carbon atoms; R.sub.9 is an alkyl group having 1 to about 10 carbon atoms; m is 0 or 1; and n is an integer from 5 to 99. The poly(vinyl ether) amines of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: April 26, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5306316
    Abstract: Poly(alkylene ether) amines having the formula: ##STR1## wherein A is an amine moiety having at least one basic nitrogen atom; R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the poly(vinyl ether) amine soluble in hydrocarbons boiling in the gasoline or diesel fuel range; R.sub.2 is an alkylene group having 2 to about 8 carbon atoms; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each independently hydrogen or a lower alkyl group having 1 to about 4 carbon atoms; R.sub.9 is an alkyl group having 1 to about 10 carbon atoms; m is 0 or 1; n is an integer from 5 to 99; and W is a hydroxy(oxypropylene) group having the formula: ##STR2## or mixtures thereof. The poly(vinyl ether) amines of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: April 26, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5306314
    Abstract: Poly(alkylene ether) aminocarbamates having the formula: ##STR1## wherein A is a polyamine moiety having at least one basic nitrogen atom; R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the poly(vinyl ether) aminocarbamate soluble in hydrocarbons boiling in the gasoline or diesel fuel range; R.sub.2 is an alkylene group having 2 to about 8 carbon atoms; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are each independently hydrogen or a lower alkyl group having 1 to about 4 carbon atoms; R.sub.9 is an alkyl group having 1 to about 10 carbon atoms; m is 0 or 1; and n is an integer from 5 to 99.The poly(vinyl ether) aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: April 26, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5300701
    Abstract: A process for the preparation of a polyisobutyl hydroxyaromatic compound which comprises alkylating a hydroxyaromatic compound in the presence of an acidic alkylation catalyst with a polyisobutene having a number average molecular weight in the range of about 300 to 5,000 and wherein the polyisobutene contains at least about 70% of a methylvinylidene isomer.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: April 5, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard E. Cherpeck