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:
Jul. 02, 1991
Filed:
Apr. 13, 1990
Applicant:
Inventors:
James R Lowell, Jr, Bend, OR (US);
David J Edlund, Bend, OR (US);
Dwayne T Friesen, Bend, OR (US);
George W Rayfield, Bend, OR (US);
Assignee:
Bend Research, Inc., , US;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
422 58 ; 422 57 ; 422 681 ; 422 8201 ; 422 8202 ; 436150 ; 436151 ; 73 232 ; 73 2401 ; 73 2406 ; 73 53 ; 73775 ; 73776 ;
Abstract
Sensors responsive to small changes in the concentration of chemical species are disclosed, comprising (a) a mechanochemically responsive polymeric film capable of expansion or contraction in response to a change in its chemical environment, operatively coupled to (b) a transducer capable of directly converting said expansion or contraction to a measurable electrical response.