Patents by Inventor Charles H. Bechtel

Charles H. Bechtel 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: 4113507
    Abstract: A method is provided for preparing tin oxide film forming solutions wherein a heel of prepared filming solution is maintained in a mixing vessel and ingredients for a fresh solution are added thereto so that the viscosity of the solution is kept sufficiently low to improve mixing rates and with the effect that fuming and volatilization of the solution is substantially reduced during mixing.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: September 12, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Donald L. McHenry, Charles H. Bechtel