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:
Jun. 11, 1985
Filed:
Mar. 21, 1983
Applicant:
Inventors:
Michihiro Murata, Kyoto, JP;
Shoichi Kitao, Otokuni, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01W / ;
U.S. Cl.
CPC ...
733365 ; 324 / ;
Abstract
A dry/dew/frost sensor comprising a plurality of sensor units, each sensor unit comprising a ceramic substrate (1, 2) whose permittivity is lower than ice and a pair of electrodes (3, 4; 5, 6) being arranged on the ceramic substrate in contact therewith, wherein adjacent sensor units are arranged so as to face each other at a predetermined distance so that the pair of electrodes (3, 4; 5, 6) may be opposed to each other, and the impedance between the pair of electrodes on each of the sensor unit varying with changes in three states, dry, bedewed, and frosted states.