Patents Represented by Attorney K. K. Yee

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  • Method and apparatus for direct radon measurement
    Patent number: 3968371
    Abstract: Radon is directly measured by a portable device which is attached to the l of a mine or other area from which the gas may be emanating. The radon is collected and directed to an instrument having a gas proportional counter. To prevent build up of radon daughters on the gas proportional counter, with consequent high alpha particle background, a moving film surrounds the counter and carries away the radon daughters.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: July 6, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Allen E. Greendale