Patents by Inventor Hans D. Holtz

Hans D. Holtz 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: 4249912
    Abstract: A detergent additive aminoamide, prepared by reacting a polycarboxylic amino acid with alkylamines, is combined into fuel for an internal combustion engine or lubricating oil as a composition suitable for reducing deposits in an internal combustion engine. In an embodiment of the invention, the aminoamide is further combined with a sulfonic acid to obtain a fuel detergent of improved operability.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: February 10, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Hans D. Holtz, deceased, Benedict R. Bonazza
  • Patent number: 4247300
    Abstract: A detergent additive imidazoline prepared by reacting carboxylic acid with polyamine is combined into fuel for an internal combustion engine or lubricating oil as a composition suitable for reducing deposits in an internal combustion engine. In an embodiment of the invention, the imidazoline is further combined with a sulfonic acid to obtain a fuel detergent of improved operability.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: January 27, 1981
    Assignee: Phillips Petroleum Company
    Inventors: Benedict R. Bonazza, Hans D. Holtz, deceased
  • Patent number: 4128596
    Abstract: A catalytically active composition is provided that is an intercalate of graphite, aluminum halide, and a Group VA metal halide. A process for preparing an intercalate of graphite, aluminum halide, and a Group VA metal halide is also provided.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: December 5, 1978
    Assignee: Phillips Petroleum Company
    Inventors: Clifford E. Smith, Hans D. Holtz
  • Patent number: 4125383
    Abstract: A long chain monocarboxylic acid, a polyamine, and an isocyanate containing about 12 to 18 carbon atoms are reacted to provide compounds which are suitable as ashless detergent additives. Optionally, these compounds can be further reacted with hydrocarbyl sulfonic acid. The method for producing these compounds is also provided. In a preferred embodiment the ashless fuel detergent additives are combined with hydrocarbons suitable as fuel in an internal combustion engine to provide ashless fuel detergent compositions.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: November 14, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Hans D. Holtz
  • Patent number: 4110252
    Abstract: A catalytically active composition is provided that is an intercalate of graphite, aluminum halide, and a Group VA metal halide. A process for preparing an intercalate of graphite, aluminum halide, and a Group VA metal halide is also provided.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: August 29, 1978
    Assignee: Phillips Petroleum Company
    Inventors: Clifford E. Smith, Hans D. Holtz
  • Patent number: 4088823
    Abstract: A process is provided for oxygenating alkyl-substituted aromatic compounds. In the process alkyl-substituted aromatic compounds are contacted with molecular oxygen in the presence of a suitable monocarboxylic acid, a soluble copper, cobalt, or iron compound, and an inorganic bromine compound. Optionally present are inorganic nitrates, acetic anhydride, or water. In an embodiment of the invention the process is carried out in two distinct steps with contact of the alkyl-substituted aromatic compounds and oxygen in the presence of the essential components produce an ester comprising both an aromatic alcohol and the carboxylic acid with subsequent hydrolyzing of this ester to produce an aromatic alcohol with regeneration of the carboxylic acid.
    Type: Grant
    Filed: October 7, 1975
    Date of Patent: May 9, 1978
    Assignee: Phillips Petroleum Company
    Inventors: Hans D. Holtz, Lloyd E. Gardner
  • Patent number: 4082518
    Abstract: Improved additives for motor fuels and lubricants are provided comprising low molecular weight hydrogenated liquid polymers containing low levels of combined nitrogen. More specifically, hydrogenated adducts formed from normally liquid low molecular weight polydiolefins and acrylonitrile are excellent additives for motor fuels and lubricants. Motor fuels and lubricating oil compositions containing said additives are also provided.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: April 4, 1978
    Assignee: Phillips Petroleum Company
    Inventors: Hans D. Holtz, William T. Nelson, Albert N. Devault
  • Patent number: 4065511
    Abstract: Selected organic peroxides are converted to the corresponding alcohols when contacted with a triorganophosphine in a reaction medium comprising water and an organic solvent miscible with water. In one embodiment, diene polyperoxides are converted to the novel diols.
    Type: Grant
    Filed: September 21, 1973
    Date of Patent: December 27, 1977
    Assignee: Phillips Petroleum
    Inventor: Hans D. Holtz
  • Patent number: 4059535
    Abstract: A long chain monocarboxylic acid is reacted with a multi-amine to produce an amide and the amide is then treated with sulfonic acid to produce a sulfonate to provide compounds which are suitable as ashless detergent additives and the method for producing these compounds are provided. In a preferred embodiment the detergent additives are combined with hydrocarbons suitable as fuel in an internal combustion engine and with oil formulations to provide ashless fuel detergent compositions and lubricant detergent compositions.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: November 22, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Albert N. De Vault, Hans D. Holtz
  • Patent number: 4059414
    Abstract: A long chain monocarboxylic acid is reacted with a trialkanolamine to produce an ester and this ester is then treated with sulfonic acid to produce a sulfonate to provide compounds which are suitable as ashless detergent additives and the method for producing these compounds are provided. In a preferred embodiment the ashless fuel detergent additives are combined with hydrocarbons suitable as fuel in an internal combustion engine to provide ashless fuel and lubricant detergent compositions.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: November 22, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Hans D. Holtz, Benedict R. Bonazza
  • Patent number: 4000068
    Abstract: Organically polluted waters are purified by contacting such waters with a water soluble copper salt catalyst in the liquid phase under oxidizing conditions. In one embodiment, an aqueous stream obtained from the effluent of an oxidative dehydrogenation process containing contaminating oxygen-containing organic materials is subjected to liquid phase oxidizing conditions in the presence of cupric nitrate under conditions providing sufficient cupric ion concentration to convert the water to a potable aqueous product.
    Type: Grant
    Filed: August 12, 1975
    Date of Patent: December 28, 1976
    Assignee: Phillips Petroleum Company
    Inventors: William T. Nelson, Hans D. Holtz
  • Patent number: 3931236
    Abstract: A halotetrahydropyran is oxidized and dehydrohalogenated employing oxygen and a free radical initiator.4-Chlorotetrahydropyran is converted to 5,6-dihydro-1,2-pyrone using 2,2'-azobis(2-methylpropionitrile) under elevated oxygen pressure and at a temperature of the order of about 170.degree.F.
    Type: Grant
    Filed: April 17, 1973
    Date of Patent: January 6, 1976
    Assignee: Phillips Petroleum Company
    Inventors: Hans D. Holtz, John E. Mahan