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: 6136051
    Abstract: A fuel composition has a major portion of hydrocarbons boiling in the gasoline range, at least 1,200 ppm by weight of a detergent, and at least 2,400 ppm by weight of a mineral carrier fluid. The detergent is a hydrocarbyl-substituted amine or polyamine having at least one basic nitrogen. The weight ratio of mineral carrier fluid to detergent of the fuel composition is at least 2:1. Preferably, the detergent is present at a concentration of at least 2,000 ppm by weight, and the weight ratio of mineral carrier fluid to detergent is at least 4:1. Preferably, the detergent is either a polybutene amine or a polybutene succinimide.
    Type: Grant
    Filed: July 5, 1996
    Date of Patent: October 24, 2000
    Assignee: Chevron Chemical Company
    Inventors: Ralph M. Forde, Majid R. Ahmadi, Richard E. Cherpeck
  • Patent number: 6114542
    Abstract: Ethers of polyalkyl or polyalkenyl N-hydroxyalkyl succinimides having the formula: ##STR1## or a fuel soluble salt thereof. The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: September 5, 2000
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 6039773
    Abstract: A polyamine-containing polyalkyl aromatic ester having the formula: ##STR1## or a fuel-soluble salt thereof; wherein R.sub.1 is a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms, wherein the polyamine moiety is connected to the aromatic ring through one of its amine nitrogen atoms and R.sub.2 is a polyalkyl group having an average molecular weight in the range of about 450 to 5000.The polyamine-containing polyalkyl aromatic esters of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: March 21, 2000
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 6033446
    Abstract: A polyalklpyroroplidine compound of the formula: ##STR1## or a fuel-soluble salt thereof; wherein R.sub.1 is a polyalkyl group having an average molecular weight in the range of from about 500 to 5,000;R.sub.2 is a straight- or branched-chain alkylene group having from about 2 to 6 carbon atoms;is R.sub.3 is H or CH.sub.3 ; andx is an integer from about 0 to 4.The polyalkylpyrrolidines of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: March 7, 2000
    Assignee: Chevron Chemical Company LLC
    Inventors: Richard E. Cherpeck, James D. Kramer
  • Patent number: 5993497
    Abstract: Esters of polyalkyl or polyalkenyl N hydroxyalkyl succinimides having the formula: ##STR1## or a fuel soluble salt thereof; wherein R is a polyalkyl or polyalkenyl group having an average molecular weight in the range of about 450 to about 5,000;n is an integer from 2 to 5; and Z is a moiety selected from the group consisting of ##STR2## wherein R.sub.1 is a hydroxy, nitro, cyano or --(CH.sub.2).sub.x --NR.sub.3 R.sub.4, wherein R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl of 1 to 6 carbon atoms and x is 0 or 1; and R.sub.2 is hydrogen, hydroxy, nitro, cyano or --(CH.sub.2).sub.y --NR.sub.5 R.sub.6, wherein R.sub.5 and R.sub.6 are independently hydrogen or lower alkyl of 1 to 6 carbon atoms and y is 0 or 1.The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: November 30, 1999
    Assignee: Chevron Chemical Company LLC
    Inventors: Richard E. Cherpeck, Kenneth D. Nelson
  • Patent number: 5954843
    Abstract: Aminocarbamates of polyalkyl or polyalkenyl N-hydroxyalkyl succinimides having the formula: ##STR1## or a fuel soluble salt thereof; wherein R is a polyalkyl or polyalkenyl group having an average molecular weight in the range of about 450 to about 5,000;n is an integer from 2 to 5; andA is a polyamine moiety having at least one basic nitrogen atom, wherein the polyamine is connected to he carbonyl group through one of its nitrogen atoms to form a carbamate linkage.The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: September 21, 1999
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5916825
    Abstract: A compound of the formula: ##STR1## wherein R.sub.1 is a polyisobutanyl group derived from a highly reactive polyisobutene having an average molecular weight in the range of from about 500 to 5,000;R.sub.2 is an alkylene group having from about 2 to 6 carbon atoms; andx is an integer from about 1 to 4.The polyisobutanyl succinimides of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: June 29, 1999
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5865861
    Abstract: A polyamine-containing poly(oxyalkylene) aromatic ester having the formula: ##STR1## or a fuel-soluble salt thereof; where R.sub.1 is a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms, wherein the polyamine moiety is connected to the aromatic ring through one of its amine nitrogen atoms, R.sub.2 and R.sub.3 are independently hydrogen or lower alkyl and each R.sub.2 and R.sub.3 is independently selected in each --O--CHR.sub.2 --CHR.sub.3 -unit; R.sub.4 is hydrogen, alkyl having 1 to about 100 carbon atoms, phenyl, aralkyl having about 7 to about 100 carbon atoms or alkaryl having about 7 to about 100 carbon atoms, or an acyl group of the formula: ##STR2## where R.sub.5 is alkyl having 1 to about 30 carbon atoms, phenyl, aralkyl having about 7 to about 36 carbon atoms or alkaryl having about 7 to about 36 carbon atoms; and y is an integer from about 5 to about 100.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: February 2, 1999
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5853436
    Abstract: A diesel fuel composition comprising a major amount of hydrocarbons boiling in the diesel range and an effective lubricity enhancing amount of a salt of an alkyl hydroxyaromatic compound and an aliphatic amine, wherein the salt has the formula: ##STR1## wherein R is alkyl of 6 to 25 carbon atoms; R.sub.1 is alkyl or alkenyl of 6 to 50 carbon atoms; and X is hydrogen, hydroxy or the group --O.sup.- H.sub.3 N.sup.+ --R.sub.2, wherein R.sub.2 is alkyl or alkenyl of 6 to 50 carbon atoms.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: December 29, 1998
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5851242
    Abstract: A fuel additive composition comprising:(a) a polyalkylphenoxyaminoalkane having the formula: ##STR1## or a fuel soluble salt thereof, wherein R is a polyalkyl group having an average molecular weight in the range of about 600 to 5,000;R.sub.1 and R.sub.2 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms; andA is amino, N-alkyl amino having about 1 to about 20 carbon atoms in the alkyl group, N,N-dialkyl amino having about 1 to about 20 carbon atoms in each alkyl group, or a polyamine moiety having about 2 to about 12 amine nitrogen atoms and about 2 to about 40 carbon atoms; 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.The fuel additive compositions of this invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: December 22, 1998
    Assignee: Chevron Chemical Company
    Inventors: Richard E. Cherpeck, Jack E. Morris, Majid R. Ahmadi
  • Patent number: 5849048
    Abstract: Substituted biphenyl poly(oxyalkylene) ethers having the formula: ##STR1## wherein R.sub.1 is hydrogen or hydroxyl; R.sub.2 is hydroxyl, cyano, nitro, amino, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains 1 to about 6 carbon atoms, N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains 1 to about 6 carbon atoms, with the proviso that R.sub.1 and R.sub.2 are ortho relative to each other and meta or para relative to the adjoining phenyl substitutent; R.sub.3 and R.sub.4 are independently hydrogen or lower alkyl having 1 to about 6 carbon atoms and each R.sub.3 and R.sub.4 is independently selected in each --OCHR.sub.3 --CHR.sub.4 -- unit; R.sub.5 is hydrogen, alkyl having 1 to about 100 carbon atoms, phenyl, aralkyl having about 7 to about 100 carbon atoms, alkaryl having about 7 to about 100 carbon atoms; or an acyl group having the formula: ##STR2## wherein R.sub.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 15, 1998
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5830244
    Abstract: A fuel additive having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen or lower alkyl; 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 30, 1996
    Date of Patent: November 3, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5827334
    Abstract: Substituted biphenyl polyalkyl esters having the formula: ##STR1## wherein R.sub.1 is hydrogen or hydroxyl; R.sub.2 is hydroxyl, cyano, nitro, amino, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains 1 to about 6 carbon atoms, N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains 1 to about 6 carbon atoms, with the proviso that R.sub.1 and R.sub.2 are ortho relative to each other and meta or para relative to the adjoining phenyl substitutent; and R.sub.3 is a polyalkyl group having an average molecular weight in the range of about 450 to about 5,000.The substituted biphenyl polyalkyl esters of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 27, 1998
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5827333
    Abstract: Substituted biphenyl polyalkyl ethers having the formula: ##STR1## wherein R.sub.1 is hydrogen or hydroxyl; R.sub.2 is hydroxyl, cyano, nitro, amino, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains 1 to about 6 carbon atoms, N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains 1 to about 6 carbon atoms, with the proviso that R.sub.1 and R.sub.2 are ortho relative to each other and meta or para relative to the adjoining phenyl substitutent; and R.sub.3 is a polyalkyl group having an average molecular weight in the range of about 450 to about 5,000.The subsitituted biphenyl polyalkyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: October 27, 1998
    Assignee: Chevron Chemical Company LLC
    Inventor: Richard E. Cherpeck
  • Patent number: 5786499
    Abstract: Aromatic amides of poly(oxyalkylene) carbamates having the formula: ##STR1## or a fuel-soluble salt thereof; wherein A, R.sub.1 -R.sub.10, x, y, and z are as defined herein.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: July 28, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5755835
    Abstract: A fuel additive composition comprising:(a) A fuel-soluble aliphatic amine selected from the group consisting of (1) a straight or branched chain hydrocarbyl-substituted amine, (2) a hydroxyalkyl substituted amine, and (3) a straight or branched chain hydrocarbyl-substituted succinimide; and(b) a polyalkyl hydroxyaromatic compound or salt thereof wherein the polyalkyl group has sufficient molecular weight and carbon chain length to render the polyalkyl hydroxyaromatic compound soluble in hydrocarbons boiling in the gasoline or diesel range.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: May 26, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5749929
    Abstract: A fuel additive composition comprising: (a) an aromatic ester compound of the formula: ##STR1## or a fuel soluble salt thereof, wherein R is hydroxy, nitro or --(CH.sub.2).sub.x --NR.sub.5 R.sub.6, wherein R.sub.5 and R.sub.6 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms and x is 0 or 1;R.sub.1, is hydrogen, hydroxy, nitro or --NR.sub.7 R.sub.8, wherein R.sub.7 and R.sub.8 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;R.sub.2 and R.sub.3 are independently 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 450 to 5,000; 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.The fuel additive compositions of this invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: May 12, 1998
    Assignee: Chevron Chemical Company
    Inventors: Richard E. Cherpeck, Jack E. Morris, Majid R. Ahmadi
  • Patent number: 5728182
    Abstract: A polyalkyl ester of a substituted polyphenylether having the formula: ##STR1## wherein A is amino, aminomethyl, cyano, nitro, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains about 1 to about 6 carbon atoms, or N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains about 1 to about 6 carbon atoms; R.sub.1 a polyalkyl group having an average molecular weight in the range of about 450 to about 5000; and x is an integer from about 1 to about 10 and y is an integer from 0 to about 10. The polyalkyl esters of the substituted polyphenyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: March 17, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5713966
    Abstract: Polyalkyl hydroxyaromatic esters having the formula: ##STR1## or a fuel-soluble salt thereof; where 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 hydroxyaromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: February 3, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5709720
    Abstract: Aromatic ethers of polyalkylphenoxyalkanols having the formula: ##STR1## or a fuel soluble salt thereof, wherein R is hydroxy, nitro or --(CH.sub.2).sub.x -NR.sub.5 R.sub.6, wherein R.sub.5 and R.sub.6 are independently hydrogen or lower alkyl having 1 to carbon atoms, and x is 0 or 1;R.sub.1 is hydrogen, hydroxy, nitro or --NR.sub.7 R.sub.8, wherein R.sub.7 and R.sub.8 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms;R.sub.2 and R.sub.3 are independently 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 450 to 5,000.The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: January 20, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck