Patents by Inventor John M. Cron

John M. Cron 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).

  • Pressurized radioactive gas treatment system
    Patent number: 5368633
    Abstract: A system for collecting, transferring and storing radioactive gas released from other radioactive materials. In the described process, gas pump (24) removes gas from a headspace volume within an unvented radioactive material storage vessel (8). The gas is cooled in an aftercooler (28) and discharged into a receiver (32). As pressure in receiver (32) increases, compressed gas is transferred to a selected pressurized decay vessel (44 or 50), in which the radioactive gas remains for a predetermined decay period. After expiration of decay period, decayed gas is either recycled back to the radioactive material storage vessel (8) via recycled gas recirculation line (52) and pressure reducing valve (54), or is discharged to atmosphere through an activated carbon and high-efficiency particulate filters (48), removing remaining undecayed radioactive gas and particulate daughter products.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: November 29, 1994
    Assignee: Morrison-Knudson (an Idaho corporation)
    Inventors: Joseph T. Foldyna, Donald J. Carpenter, John M. Cron