Patents by Inventor Bruce H. Garth

Bruce H. Garth 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).

  • Corrosion inhibitor compositions
    Patent number: 4214876
    Abstract: Improved corrosion inhibitor compositions for hydrocarbon fuels consisting of mixtures of (a) about 75 to 95 weight percent of a polymerized unsaturated aliphatic monocarboxylic acid having about 16 to 18 carbons, and (b) about 5 to 25 weight percent of a monoalkenylsuccinic acid wherein the alkenyl group has 8 to 18 carbons. Also described are concentrates of the above compositions in hydrocarbon solvents, as well as fuels containing the compositions.
    Type: Grant
    Filed: December 12, 1978
    Date of Patent: July 29, 1980
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Bruce H. Garth, Francis H. Schmidt
  • Mannich bases containing tertiary amines
    Patent number: 4172707
    Abstract: Mannich condensation products useful in gasoline as carburetor detergents; the condensation compositions having the formula ##STR1## wherein Z is an alkyl- and hydroxy-substituted benzyl group wherein the alkyl has 20 to 1000 carbon atoms; n is 2; x, y, and c are each 0 or 1; x+y=0 or 1; with the proviso that when x is 0 and y is 0, then c is 0; when x is 1 and y is 0, then c is 1 and when x is 0 and y is 1, then c is 1.
    Type: Grant
    Filed: July 20, 1978
    Date of Patent: October 30, 1979
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Bruce H. Garth
  • Motor fuel composition containing mannich condensation products
    Patent number: 3944397
    Abstract: A motor fuel composition comprising gasoline and benzyl polyamine of the formula ##EQU1## where Z is an alkyl- and hydroxy-substituted benzyl group wherein the alkyl group has 50-1000 carbon atoms and at least 60% of said alkyl group is para to the hydroxyl group, n is 2 to 3, R is hydrogen or Z, and the sum of a and b is 0 to 5, said polyamine being present in an amount sufficient to provide carburetor detergency. Also disclosed is a concentrated solution of said polyamine in a hydrocarbon solvent.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: March 16, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert A. Gardiner, Bruce H. Garth