Patents by Inventor Arthur E. Brewster

Arthur E. Brewster 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).

  • Infra-red light absorption gas detector
    Patent number: 4590374
    Abstract: A gas detector arrangement, e.g. for detecting carbon dioxide, includes an infra-red source, a photodetector and band pass filter disposed in the light path therebetween. The arrangement includes means for oscillating the pass-band of the filter across an absorption band edge of the gas to be detected. The arrangement is portable and may be installed in diving apparatus.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: May 20, 1986
    Assignee: International Standard Electric Corporation
    Inventor: Arthur E. Brewster
  • Gas detector
    Patent number: 4264209
    Abstract: Apparatus for illuminating a gas or gas mixture and filtering the output thereof alternately with two filters. One filter has a passband at an absorption band of a gas to be detected. The other filter has a passband outside the absorption band.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: April 28, 1981
    Assignee: ITT Industries, Inc.
    Inventor: Arthur E. Brewster