Patents by Inventor William R. Schofield

William R. Schofield 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).

  • System for control of a nitric acid plant
    Patent number: 3977832
    Abstract: In the operation of a nitric acid plant, the rate of flow of process air to the converter in which ammonia is oxidized is controlled by injection of steam at regulated rates into the heated tail gas from the nitric acid production, thereby utilizing regulated mass flow power augmentation in the gas used for powering the expansion turbines employed in driving the compressors operated to furnish required process air at superatmospheric pressure to the nitric acid plant.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: August 31, 1976
    Assignee: Air Products and Chemicals, Inc.
    Inventor: William R. Schofield