Patents Represented by Law Firm Arthur A. Smith, Jr. et al.
  • IONIZATION APPARATUS AND METHOD FOR MASS SPECTROMETRY
    Patent number: 3984692
    Abstract: Ionizing gaseous substances (e.g., for mass spectral analysis) by passing the neutral gaseous substances sequentially through a chemical ionization (CI) zone and an electron impact ionization (EI) zone and impelling gaseous ions formed in one or both of the zones to a mass spectrometer. CI, EI, simultaneous EI--EI, and closely alternating CI and EI spectra are obtainable.
    Type: Grant
    Filed: January 4, 1972
    Date of Patent: October 5, 1976
    Inventor: Guy P. Arsenault