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:
Apr. 25, 1978
Filed:
Sep. 02, 1976
Abstract
There is provided a humidity sensitive ceramic resistor having high humidity activity, low electrical resistance, quick response rate to humidity and high stability with respect to time, temperature, humidity and electric load which is suited for humidity-controlling devices. The ceramic resistor comprises a ceramic composition comprising at least one component having a spinel type cubic symmetry selected from the group consisting of MgCr.sub.2 O.sub.4, FeCr.sub.2 O.sub.4, NiCr.sub.2 O.sub.4, CoCr.sub.2 O.sub.4, MnCr.sub.2 O.sub.4, CuCr.sub.2 O.sub.4, Mg.sub.2 TiO.sub.4, Zn.sub.2 TiO.sub.4, Mg.sub.2 SnO.sub.4 and Zn.sub.2 SnO.sub.4, and , if desired, at least one component selected from the group consisting of TiO.sub.2, ZrO.sub.2, HfO.sub.2 and SnO.sub.2.