Patents by Inventor Gordon R. Leader

Gordon R. Leader 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).

  • Alkyl aryl sulfones and method of preparing the same
    Patent number: 5015775
    Abstract: Alkyl aryl sulfones of the formula R--SO.sub.2 --AR--Y.sub.n, wherein Ar is an aryl compound, Y is a substituent on the aryl compound and R is alkyl or cycloalkyl, and liquid mixtures of positional isomers of the same are prepared by reacting an aryl compound of the formula Ar--Y.sub.n, with an alkyl sulfonic acid of the formula R--SO.sub.3 H and a phosphorus reagent, preferably under heat. Particularly good yields and pure products are obtained using phosphorus pentoxide. Alkyl aryl sulfones produced by this method are a liquid mixture preferably containing at least two positional isomers, wherein no isomer is present in an amount of more than about 50% of the isomer mixture.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: May 14, 1991
    Assignee: Atochem North America, Inc.
    Inventors: James L. Reilly, Gordon R. Leader
  • Fluorine-containing dielectric media and capacitors employing such media
    Patent number: 4899249
    Abstract: A dielectric medium composition comprising a fluorine-containing amide or a fluorine-containing sulfonamide and capacitors or other electric devices incorporating said composition, are disclosed herein.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: February 6, 1990
    Assignee: Pennwalt Corporation
    Inventors: James L. Reilly, Ludwig K. Huber, Gordon R. Leader