Patents Assigned to Phillips Phillips Petroleum
  • Air pollution detection
    Patent number: 4399688
    Abstract: At least one air pollutant is concentrated at the source from which the sample of air is obtained. The thus concentrated at least one air pollutant is provided through conduits to a central analyzer for analysis. Concentration of the air pollutant results in reducing transport losses and also the sensitivity of the detector utilized to detect the at least one air pollutant can be greatly increased.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: August 23, 1983
    Assignee: Phillips Phillips Petroleum
    Inventor: William H. Dennis