Patents by Inventor Brian Miller Ence

Brian Miller Ence 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).

  • Device for measuring the concentration of airborne fibers
    Patent number: 6122054
    Abstract: Devices and methods for measuring the concentration of airborne fibers are provided. The devices include flow means for providing laminar flow to a portion of the fibers in an air sample and a light source for generating a light beam directed to the laminarly flowing fibers to produce a scattered light. The device further includes a sensor for sensing a portion of this scattered light and for producing an output from which a respirable fiber concentration estimate can be measured.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: September 19, 2000
    Assignee: CertainTeed Corporation
    Inventor: Brian Miller Ence