Patents by Inventor Karl F. Smith

Karl F. Smith 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).

  • Radiation detector
    Patent number: 6897448
    Abstract: A radiation detector includes a new and sensitive radiation sensor. The sensor includes a photo conductor cell. A substantially transparent cone optically coupled to the photo conductor cell, and a first layer of phosphor material coated onto the transparent cone. The layer of metal is then coated onto the phosphor material. This combination provides a sensitive and compact sensor construction. A bias light is further included to improve the sensitivity of the sensor. Signals sent by the sensor and evaluated by a microprocessor result in the transmission of predetermined audible sounds.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: May 24, 2005
    Assignee: Kno-Rad, Inc.
    Inventors: Philip L. Smith, Karl F. Smith