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: 5709719
    Abstract: A poly(oxyalkylene) 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 and R.sub.2 are independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms and each R.sub.1 and R.sub.3 is independently selected in each --O--CHR.sub.1 -CHR.sub.2 - unit; R.sub.3 is hydrogen, alkyl having about 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; x is an integer from about 1 to about 10, y is an integer from 0 to about 10; and z is an integer from about 1 to about 100.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: January 20, 1998
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5669939
    Abstract: Polyalkylphenoxyaminoalkanes having the formula: ##STR1## 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.The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: September 23, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5656040
    Abstract: Aminoaromatic ester polylactone aminocarbamates having the formula: ##STR1## wherein R.sub.1 is an alkyl group having from 1 to about 100 carbon atoms or an aralkyl or alkaryl group having from 7 to about 100 carbon atoms;R.sub.2 is an alkylene group of about 2 to 5 carbon atoms;A is a polyamine moiety having at least one basic nitrogen atom;x is an integer from 1 to 25;and y is an integer from 0 to 6. The aminoaromatic ester polylactone aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: August 12, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5651799
    Abstract: Polylactone aminocarbamates having the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;R.sub.2 is an alkylene group of about 2 to 5 carbon atoms;A is a polyamine moiety having at least one basic nitrogen atom;and x is an integer from 1 to 25.The polylactone aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: July 29, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5637120
    Abstract: Polyoxyalkylene polylactone aminocarbamates having the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;R.sub.2 and R.sub.3 are each independently hydrogen or lower alkyl having about 1 to about 6 carbon atoms 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 an alkylene group of about 2 to about 5 carbon atoms;A is a polyamine moiety having at least one basic nitrogen atom;x is an integer from about 1 to about 100; andy is an integer from about 1 to about 25.The polyoxyalkylene polylactone aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: June 10, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5637119
    Abstract: Substituted aromatic polyalkyl ethers having the formula: ##STR1## wherein R.sub.1 is a polyalkyl group having an average molecular weight of about 450 to about 5,000;A is nitro, amino, cyano, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains from about 1 to about 6 carbon atoms, or N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains from about 1 to about 6 carbon atomsx is an integer from about 0 to about 1; and y is an integer from about 0 to about 10 with the proviso that one of x and y must be 0 and the other must be greater than 0.The substituted aromatic polyalkyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: June 10, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5637121
    Abstract: Poly(oxyalkylene) 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.5 and R.sub.6 are independently hydrogen or lower alkyl having 1 to 6 carbon atoms and each R.sub.5 and R.sub.6 is independently selected in each --O--CHR.sub.5 --CHR.sub.6 -- unit; R.sub.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: June 10, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5628803
    Abstract: Compounds having the formula: ##STR1## and fuel soluble salts thereof; wherein R.sup.1 is nitro or --(CH.sub.2).sub.x --NR.sup.4 R.sup.5, wherein R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl and x is 0 or 1; R.sup.2 is hydrogen, hydroxy, nitro, or --NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 are independently hydrogen or lower alkyl and R is a polyalkyl or polyalkyloxycarbonyl group. The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: May 13, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5622532
    Abstract: Polylactone aromatic esters having the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;R.sub.2 is an alkylene group of about 2 to 5 carbon atoms;R.sub.3 and R.sub.4 are each independently hydrogen, hydroxy, nitro, amino, N-alkylamino having 1 to 6 carbon atoms in the alkyl group, or N,N-dialkylamino having 1 to 6 carbon atoms in each alkyl group, provided that R.sub.3 and R.sub.4 may not both be hydrogen;and x is an integer from 1 to 25.The polylactone aromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: April 22, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5620486
    Abstract: A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective detergent amount of a compound of the formula: ##STR1## wherein R is a hydrocarbyl group having an average molecular weight of about 400 to 5,000; andR.sub.1 and R.sub.2 are independently selected from the group consisting of hydrogen, hydroxy, --CO.sub.2 H, --NO.sub.2, and --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; provided that R.sub.1 and R.sub.2 cannot both be hydrogen.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: April 15, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5618320
    Abstract: Aromatic esters 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 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.The compounds of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: April 8, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5618319
    Abstract: Alkylamine polylactone aminocarbamates having the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;R.sub.2 is an alkylene group of about 2 to about 5 carbon atoms;A is a polyamine moiety having at least one basic nitrogen atom;and x is an integer from about 1 to about 25.The alkylamine polylactone aminocarbamates of formula I are useful as fuel additives for the prevention and control of engine deposits.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: April 8, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5599359
    Abstract: A compound of the formula: ##STR1## wherein X is hydrogen or hydroxy, and Y is --R or --C(O)O--R, wherein R is a polyalkyl group having an average molecular weight of about from 450 to 5000; or a fuel soluble salt thereof. The compounds of formula I are useful as hydrocarbon fuel additives for the prevention and control of deposits, especially intake valve deposits, in internal combustion engines.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: February 4, 1997
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5569310
    Abstract: Poly(oxyalkylene) hydroxyaromatic ethers 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.The poly(oxyalkylene) hydroxyaromatic ethers 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: October 29, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5540743
    Abstract: A fuel additive having the formula: ##STR1## wherein A.sub.1 is amino, lower alkylamino or dialkylamino, or a polyamine radical; 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; x is an integer from 0 to 10; n is an integer from 0 to 100; and when n is 0 to 10, R.sub.5 is polyalkyl having an average molecular weight of 450 to 5,000; and when n is 5 to 100, R.sub.5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl or an acyl group having the formula: ##STR2## wherein R.sub.6 is alkyl, phenyl, aralkyl or alkaryl.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: July 30, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5538521
    Abstract: A fuel additive having the formula: ##STR1## wherein 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; n is an integer from 0 to 100; and when n is 0 to 10, R.sub.5 is polyalkyl having an average molecular weight of 450 to 5,000; and when n is 5 to 100, R.sub.5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl or an acyl group having the formula: ##STR2## wherein R.sub.6 is alkyl, phenyl, aralkyl or alkaryl; R.sub.7 and R.sub.8 are independently hydrogen, hydroxy, lower alkyl or lower alkoxy; A.sub.2 is a thioether, a sulfoxide, a sulfone, a sulfonic acid, a sulfonamide, a nitrile, a carboxylic acid or ester, or a carboxamide; and x and y are independently integers from 0 to 10; with the proviso that when n and x are both 0, then A.sub.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: July 23, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5516342
    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) an aliphatic amine having at least one basic nitrogen atom and containing a hydrocarbyl group which has sufficient molecular weight and carbon chain length to render the aliphatic amine soluble in hydrocarbons boiling in the gasoline or diesel range.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: May 14, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5484463
    Abstract: Poly(oxyalkylene) hydroxy and amino aromatic carbamates having the formula: ##STR1## or a fuel-soluble salt thereof; wherein X is hydroxy or amino;R is hydrogen or lower alkyl having 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, 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 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;and n is an integer from 5 to 100.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: January 16, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5482523
    Abstract: Mannich condensation products prepared by the condensation of a compound of the formula: ##STR1## wherein 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; R.sub.7 is alkyl; u is an integer from 1 to 10; n is an integer from 5 to 100; and x is an integer from 0 to 10;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: November 2, 1994
    Date of Patent: January 9, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck
  • Patent number: 5482522
    Abstract: Mannich condensation products prepared by the condensation of a compound of the formula: ##STR1## wherein 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; R.sub.7 is hydrogen, hydroxy, lower alkyl or lower alkoxy; n is an integer from 5 to 100; and x and y are each independently an integer from 0 to 10;with an aldehyde and a nitrogen base selected from ammonia, lower alkylamine, a polyamine and mixtures thereof.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 30, 1993
    Date of Patent: January 9, 1996
    Assignee: Chevron Chemical Company
    Inventor: Richard E. Cherpeck