Patents by Inventor Allen T. Donahue

Allen T. Donahue 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).

  • Method for dry grinding with improved magnesium oxychloride cement bond containing graphite
    Patent number: 5624472
    Abstract: Magnesium oxychloride cement bonds are improved by incorporation of graphite. The graphite not only contributes to cooler dry grinding with abrasive tools based on the magnesium oxychloride bond, but unexpectedly also improves heat strength of the bond.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: April 29, 1997
    Assignee: Western Atlas, Inc.
    Inventors: James P. Koch, Allen T. Donahue
  • Magnesium oxychloride cement containing graphite
    Patent number: 5460635
    Abstract: Magnesium oxychloride cement bonds are improved by incorporation of graphite. The graphite not only contributes to cooler dry grinding with abrasive tools based on the magnesium oxychloride bond, but unexpectedly also improves heat strength of the bond.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: October 24, 1995
    Assignee: Western Atlas Inc.
    Inventors: James P. Koch, Allen T. Donahue