Patents by Inventor Gian L. Fagan

Gian L. Fagan 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: 5011617
    Abstract: Disclosed is complex tolylene polyurea-thickened grease containing less than 7 parts per million 2,4-diaminotoluene and a process for making said grease comprising reacting an isocyanate, a polyamine and monoamine with a major portion of a lubricating oil and thereafter adding an alkaline earth metal oxide or hydroxide and a carboxylic acid anhydride containing 2 to 20 carbon atoms to said mixture and thereafter milling said mixture to the consistency of grease.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: April 30, 1991
    Assignee: Chevron Research and Technology Company
    Inventor: Gian L. Fagan
  • Patent number: 4743391
    Abstract: A method for oxidatively degrading an olefinic polymer in the absence of molecular oxygen and utilizing an oxidant mixture of a peroxide and hydroperoxide is disclosed. Lubricating oils containing the products of the oxidation process as well as the products post-reacted with funtional group-containing compounds show improved viscosity index and dispersancy properties.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: May 10, 1988
    Assignee: Chevron Research Company
    Inventors: Chester D. Gordon, Gian L. Fagan