Patents by Inventor John M. Larkin

John M. Larkin 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).

  • Dispersant and lube oils containing same
    Patent number: 4100086
    Abstract: Disclosed are lube oil dispersants consisting of the reaction products of halogenated polyolefins and aromatic nitrogen heterocycles.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: July 11, 1978
    Assignee: Texaco Inc.
    Inventors: John M. Larkin, Harry Chafetz
  • Preparation of diacylfurazan oxides
    Patent number: 4089867
    Abstract: Diacylfurazan oxides are prepared by catalytic dimerization of alpha-nitroketones.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: May 16, 1978
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin, Stanley R. Newman
  • Preparation of acylisoxazolines
    Patent number: 4069226
    Abstract: A method of preparing acylisoxazolines by contacting an alkene with dinitrogen tetroxide and oxygen in the presence of a denitrating agent and calcium oxide.
    Type: Grant
    Filed: November 5, 1976
    Date of Patent: January 17, 1978
    Assignee: Texaco Inc.
    Inventors: Mahmoud S. Kablaoui, John M. Larkin, Robert E. Reid
  • Preparation of acylhydroximyl halides
    Patent number: 4038316
    Abstract: Novel acylhydroximyl halides are provided and prepared by contacting a nitroalkanone with a halogen acid in the presence of an organic acid or alcohol.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: July 26, 1977
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin
  • Preparation of acids
    Patent number: 4028388
    Abstract: A method of preparing carboxylic acids is provided by heating an acylhydroximyl halide in an aqueous medium at elevated temperatures.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: June 7, 1977
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin
  • Sample enlarging material display device
    Patent number: 4009533
    Abstract: A device for displaying a sample of sheet material such as carpet or drapery comprises a floor wall having perimetric edges in a polygon shape and a plurality of walls extending upwardly from the perimetric edges thereof. Means are provided for connecting the upstanding walls at the adjoining vertical edges thereof so as to enclose the floor in a box-like configuration having an open upper end. The upstanding walls have mirror surfaces on their inwardly presented sides so that a viewer, looking through the opened upper end will see the illusion that the upper surface of the floor wall extends infinitely.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: March 1, 1977
    Inventor: John M. Larkin
  • Preparation of alkylamides
    Patent number: 4000194
    Abstract: Alkylamides are prepared by heating an acylhydroximyl halide in an oxygenated polar organic solvent at a temperature of about 70.degree. to 190.degree. C. The alkylamides herein prepared are useful as fuel and lubricant additives and as intermediates in the preparation of acids, nitriles and amines.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: December 28, 1976
    Assignee: Texaco Inc.
    Inventors: Roger D. Duranleau, John M. Larkin
  • Preparation of acylhydroximyl halides
    Patent number: 3960953
    Abstract: Novel acylhydroximyl halides are provided and prepared by contacting a nitroalkanone with a halogen acid in the presence of an organic acid or alcohol.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: June 1, 1976
    Assignee: Texaco Inc.
    Inventors: Roger G. Duranleau, John M. Larkin
  • Preparation of nitrocarbonyl compounds
    Patent number: 3941846
    Abstract: A method of preparing a nitrocarbonyl having at least 4 carbon atoms corresponding to the formula: ##EQU1## by contacting a dinitroalcohol having at least 5 carbon atoms corresponding to the formula: ##EQU2## with an alkaline agent at a temperature of from about 0.degree. to 200.degree.C. A valuable by product recoverable from the reaction is a nitroalkane. The contemplated nitrocarbonyls include nitroketones and nitroaldehydes which are useful as solvents, plasticizers, bactericides, lubricant additives and fuel additives.
    Type: Grant
    Filed: April 19, 1971
    Date of Patent: March 2, 1976
    Assignee: Texaco Inc.
    Inventor: John M. Larkin
  • Display box
    Patent number: D244430
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: May 24, 1977
    Inventor: John M. Larkin