Patents by Inventor Nicholas DeGeorge, deceased

Nicholas DeGeorge, deceased 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).

  • Synthetic lubricant base stock of monopentaerythritol and trimethylolpropane esters
    Patent number: 4826633
    Abstract: An improved synthetic ester lubricant base stock formed by reacting at least one of trimethylolpropane and monopentaerythritol with a mixture of aliphatic monocarboxylic acids is provided. The mixture of acids including straight-chain acids having from 5 to 10 carbon atoms and an iso-acid having from 6 to 10 carbon atoms, preferably iso-nonanoic acid. The base stock is mixed with a conventional ester lubricant additive package to form a lubricant having a viscosity at 210.degree. F. of at leasts 5.0 centistokes and pour point of at least as low as -65.degree. F. The resulting lubricants have a decreased tendency to form deposits in gas turbine engines.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: May 2, 1989
    Assignee: Hatco Chemical Corporation
    Inventors: Dale D. Carr, Nicholas DeGeorge, deceased