Patents by Inventor Gordon D. Hall

Gordon D. Hall 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).

  • Method and apparatus for accurate remote monitoring of gases
    Patent number: 4520265
    Abstract: Apparatus is provided which permits highly accurate remote measurement of methane gas concentrations even in daylight through the use of an extremely narrow spectral filter centered on the Q-branch of the methane absorption band at 3.3 microns and through the use of cooperating comparison channels with digital processing for real time correction of data to compensate for surface temperature, atmospheric temperature and atmospheric water absorption factors.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: May 28, 1985
    Assignee: Southern California Gas Co.
    Inventors: Michael Griggs, Laurence L. Acton, Gordon D. Hall