Patents by Inventor John S. Thackrah

John S. Thackrah 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 and compositions for treating fibrous cellulosic materials
    Patent number: 5873909
    Abstract: The application of a treating solution containing polyhydroxy compound and choline chloride to a fibrous cellulosic material is made more uniform and reproducible by including in the treating solution a colorizing amount of a fugitive tint, by which the uniformity of the application can be observed and corrected by appropriate changes to the operating variables.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: February 23, 1999
    Assignee: Ducoa, L.P.
    Inventors: George L. Brodmann, John S. Thackrah
  • Cooling scheme for combustor vane interface
    Patent number: 4739621
    Abstract: The turbine vanes of a gas turbine engine immediately downstream of the combustor are maintained at a cool temperature by judiciously directing cooling air at the stagnation point ahead of the vane's leading edge at the juncture of the vane's airfoil section and platform.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: April 26, 1988
    Assignee: United Technologies Corporation
    Inventors: Jason S. Pettengill, John S. Thackrah, Dennis J. Sullivan, Theodore G. Fox