Patents by Inventor David B Askey

David B Askey 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).

  • Wireless freeze sensor and alert system
    Patent number: 6987457
    Abstract: A freeze detection device that sends a wireless freeze-alert signal when a water freeze condition is detected. The device allows ready installation in areas where traditional freeze detection equipment would require significant effort and expense. The device provides freeze-detecting functionality with very small power consumption, allowing long lasting sensing capability and low maintenance.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: January 17, 2006
    Inventors: Shumei Yin, David B Askey