Patents by Inventor Thomas C. Wadham

Thomas C. Wadham 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).

  • Catalyst regeneration
    Patent number: 4211340
    Abstract: A system for controlling the addition of small amounts of material to process using the loss-in-weight method. The system uses digital control in combination with an on-off solenoid valve whose on time can be varied to meter the material uniformly at low rates.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: July 8, 1980
    Assignee: Shell Oil Company
    Inventors: Julius J. Szakasits, Thomas C. Wadham