Patents by Inventor Warren C. Greenway

Warren C. Greenway 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).

  • Moisture detection apparatus and method
    Patent number: 6904789
    Abstract: A sensor to detect the presence of water or moisture in bulk materials includes a standard circuit board and a three element transmission line. The sensor electronics include an oscillator responsive to a direct current voltage supply which provides a square wave voltage signal. The sensor electronics further include a phase detector which detects the difference in phase between the reference square wave voltage signal and a signal provided to the transmission line buried in a medium. The phase difference is proportional to the dielectric constant of the medium surrounding the transmission line.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 14, 2005
    Assignee: Decagon Devices, Inc.
    Inventors: Gaylon S. Campbell, Warren C. Greenway
  • Moisture detection apparatus and method
    Publication number: 20030015024
    Abstract: A sensor to detect the presence of water or moisture in bulk materials includes a standard circuit board and a three element transmission line. The sensor electronics include an oscillator responsive to a direct current voltage supply which provides a square wave voltage signal. The sensor electronics further include a phase detector which detects the difference in phase between the reference square wave voltage signal and a signal provided to the transmission line buried in a medium. The phase difference is proportional to the dielectric constant of the medium surrounding the transmission line.
    Type: Application
    Filed: July 13, 2001
    Publication date: January 23, 2003
    Inventors: Gaylon S. Campbell, Warren C. Greenway
  • Laser scanning apparatus
    Patent number: 5546217
    Abstract: A laser scanning apparatus includes generally a handle assembly, a staff segment, a scanner section, and a base. The scanner section includes a scanner assembly which rotates and causes a beam of laser light projected onto a reflector to move in a generally upward spiral path to scan a conical section to detect and measure objects surrounding the laser scanning apparatus.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: August 13, 1996
    Assignee: Decagon Devices, Inc.
    Inventor: Warren C. Greenway