Patents by Inventor William T. Mitchell

William T. Mitchell 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).

  • Valves for fluids
    Patent number: 4348005
    Abstract: A bellows-type valve includes several additional safeguards in the form of back-up seals which are effective to prevent in- or out-leakage should the bellows fail. Some of the seals can be changed while the valve remains closed. There is provision for testing the integrity of the seals while the valve remains operative.
    Type: Grant
    Filed: September 28, 1972
    Date of Patent: September 7, 1982
    Assignee: British Nuclear Fuels Limited
    Inventors: Alan Eaton, William T. Mitchell, Alec Sunderland
  • Recovery of anhydrous acids
    Patent number: 4230887
    Abstract: C.sub.2 -C.sub.6 monocarboxylic and dicarboxylic acids are scrubbed from gas phase mixtures of such acids and water by gas absorption techniques utilizing a liquid solvent comprising a polyoxyalkylene glycol or a monoalkyl or dialkyl ether thereof. The solvent enriched with the acid is subjected to distillation to recover a substantially anhydrous acid product.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: October 28, 1980
    Assignee: Celanese Corporation
    Inventors: William T. Mitchell, Phillip S. Snyder