Patents by Inventor Stewart Melville Bowen

Stewart Melville Bowen 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).

  • Personal radiation dosimeters
    Publication number: 20020079439
    Abstract: A personal radiation dosemeter comprising a radiation detector means coupled to an electronic measurement circuit arranged in combination therewith to generate signals representative of an amount of radiation detected by the radiation detector. The radiation detector means is arranged to be screened from ambient light and is further provided with a light source optically coupled to the radiation detector and arranged to operate under control of a test control circuit to generate light of a wavelength which may be detected by said radiation detector. This arrangement provides, in combination with said electronic measurement circuit an integrity test for said radiation detector means.
    Type: Application
    Filed: March 6, 2002
    Publication date: June 27, 2002
    Applicant: Siemens Plc and Chiyoda Technol Corporation
    Inventors: William Frederick Croydon, Robert James Heath, Stewart Melville Bowen
  • Personal radiation dosimeters
    Patent number: 6388250
    Abstract: A personal radiation dosemeter comprising a radiation detector means coupled to an electronic measurement circuit arranged in combination therewith to generate signals representative of an amount of radiation detected by the radiation detector. The radiation detector means is arranged to be screened from ambient light and is further provided with a light source optically coupled to the radiation detector and arranged to operate under control of a test control circuit to generate light of a wavelength which may be detected by said radiation detector. This arrangement provides, in combination with said electronic measurement circuit an integrity test for said radiation detector means.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: May 14, 2002
    Assignees: Siemens Plc, Chiyoda Technol Corporation
    Inventors: William Frederick Croydon, Robert James Heath, Stewart Melville Bowen