Patents by Inventor Michael P. Nicholson

Michael P. Nicholson 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: 4556476
    Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of mixtures of N,N'-dimer of phenothizine or substituted phenothiazine and one or more N,N diaromatic substituted hydroxylamines.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: December 3, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4544795
    Abstract: The efficiency of acid catalyzed alkylation of alkanes with olefins is improved by conducting the alkylation in the presence of small amounts of a fatty acid having 16 to 40 carbon atoms.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4544794
    Abstract: The efficiency of acid catalyzed alkylation of alkanes with olefins is improved by conducting the alkylation in the presence of small amounts of a mixture of a neo acid and another fatty acid having 10 to 30 carbon atoms.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 1, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4529500
    Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of the N,N'-dimer of phenothiazine or a substituted phenothiazine.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: July 16, 1985
    Assignee: Atlantic Richfield
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4511457
    Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of the N,N'-dimer of phenothiazine and at least one mono- or ditertiary alkyl catechol and/or at least one mono- or ditertiary alkylhydroquinone.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: April 16, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4510041
    Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of at least one N,N'-dimer of phenothiazine or a substituted phenothiazine and at least one mono- or ditertiary alkylphenol.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: April 9, 1985
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4487982
    Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of at least one N,N' dimer of phenothiazine or a substituted phenothiazine and at least one mono- or ditertiary alkylphenol.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: December 11, 1984
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4487981
    Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of at least one N,N' dimer of phenothiazine or a substituted phenothiazine and at least one mono- or ditertiary alkyl catechol and/or at least one mono- or ditertiary alkylhydroquinone.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: December 11, 1984
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4465882
    Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of at least one N,N-diarylhydroxylamine and at least one N,N' dimer of phenothiazine or substituted phenothiazine.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: August 14, 1984
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson
  • Patent number: 4465881
    Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of the N,N'-dimer of phenothiazine or a substituted phenothiazine.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: August 14, 1984
    Assignee: Atlantic Richfield Company
    Inventors: Richard F. Miller, Michael P. Nicholson