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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.:

US 5631418 B1

PDFFull Text
Date of Patent:
May. 20, 1997

Filed:

Sep. 27, 1994

Electrically detected impedance detector for the measurement of physical

Applicant:
Inventors:

Ingmar Stuns, Helsinki, FI;

Simo Tammela, Espoo, FI;

Heikki Turtiainen, Vantaa, FI;

Jorma Ponkala, Ylonkyla, FI;

Assignee:

Vaisala Oy, Vantaa, FI;

Attorney:

Jones & Askew

Primary Examiner:

Hezron E Williams

Assistant Examiner:

Jay L Politzer

Int. Cl.
CPC ...
H01G / ; H01G / ; G01K / ; G01D / ;
U.S. Cl.
CPC ...
7333505 ; 73 2901 ; 338 35 ;
Abstract

Electrical impedance detector for measurement of physical quantifies, in particular of temperature or humidity. The detector comprises conductor electrodes (10a, 10b; 10A,10W), between which the electrical impedance (C.sub.M) that represents the physical quantity to be measured is measured. Between the conductor electrodes (10a, 10b;10A, 10W) there is an active material (11;11P) whose impedance properties are a function of the physical quantity to be measured. The detector is composed of pieces cut-off out of a continuous detector filament (20; 20H;20K), which detector filament (20;20H;20K) comprises a conductive electrode wire or an assembly of electrode wires (10a, 10b; 10A, 10W), on/between which there is an active material (11;11P) whose impedance properties are a function of the physical quantity to be measured. Further, a novel process is described for the manufacture of said detectors.

Find Patent Forward Citations

Stuns, Ingmar. (1997). Electrically detected impedance detector for the measurement of physical (U.S. Patent No. 5631418). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5631418

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