The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1998
Filed:
Oct. 25, 1996
Applicant:
Inventors:
Stephen L Monfre, Plainville, MA (US);
Anthony C Jeannotte, Foxboro, MA (US);
Richard H Seager, Mystic, CT (US);
Norman P Bridges, Cedar Park, TX (US);
Robert E Johnson, Pembroke, MA (US);
Assignee:
The Foxboro Company, Foxboro, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359891 ; 359350 ; 359889 ; 25033901 ; 25033907 ; 356419 ;
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.