Patents Represented by Attorney R. G. Cummings

Find this attorney in the Justia Lawyer Directory

  • Ionization detectors for gas chromatography
    Patent number: 4873862
    Abstract: It has been discovered that a glass envelope at elevated temperature containing a noble gas will result in electrons being evolved. The phenomenon has been employed to construct both argon and helium detectors for gas chromatography.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: October 17, 1989
    Assignee: The Perkin-Elmer Corporation
    Inventors: Raymond P. W. Scott, Elena Katz