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. 05, 2001
Filed:
Jul. 20, 1998
TDK Corporation, Tokyo, JP;
Abstract
The present invention provides a solid electrolyte having high stability against humidity at room temperature and a carbon dioxide sensor which not only can have sufficient sensitivity but also has excellent responsiveness at room temperature and which is excellent in humidity resistance due to the use of the above solid electrolyte, the solid electrolyte of the present invention being formed by heat-treating a polymer having a quaternary ammonium group in its main chain and having a halide ion as counter ion, and a metal halide, the carbon dioxide sensor of the present invention comprising a detection electrode and a reference electrode formed respectively in contact with a solid electrolyte, the detection electrode containing a metal carbonate which forms a dissociation equilibrium with carbon dioxide, the solid electrolyte being a product formed by heat-treating a compound having an ammonium ion portion and a metal halide or a product formed by heat-treating a polymer having a quaternary ammonium group in its main chain and having a halide ion as counter ion, and a metal halide.