Patents by Inventor Norman P. Bridges

Norman P. Bridges 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).

  • Optical spectral filter and linear positioner therefor
    Patent number: 5793545
    Abstract: A multi-wavelength optical filter for a portabe gas analyzer includes a filter assembly having a first opening and multiple additional openings. The first opening has a linearly variable filter disposed therein, while the additional openings have discrete filters disposed therein. The filters are linearly aligned, such that filter selection is facilitated by using the filter assembly with a linear positioning mechanism.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: August 11, 1998
    Assignee: The Foxboro Company
    Inventors: Stephen L. Monfre, Anthony C. Jeannotte, Richard H. Seager, Norman P. Bridges, Robert E. Johnson
  • Housing for a portable gas analyzer
    Patent number: D404324
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: January 19, 1999
    Assignee: The Foxboro Company
    Inventors: Richard H. Seager, Norman P. Bridges, Robert E. Johnson