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:
Dec. 31, 2002
Filed:
Dec. 13, 2000
Applicant:
Inventors:
Assignee:
Figaro Engineering, Inc., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01N 7/00 ; G01N 1/910 ; G01N 2/712 ;
U.S. Cl.
CPC ...
G01N 7/00 ; G01N 1/910 ; G01N 2/712 ;
Abstract
A central electrode is arranged in a coiled heater electrode They are buried in a SnO -based inner area and the entirety is covered by a filter The volume of the inner area is set at from 1×10 mm to 16×10 mm , the total volume of the bead is set at from 15×10 mm to 70×10 mm , and the ratio of the total volume of the bead to the volume of the inner area is set at from four to twenty to bring the sensor resistance in CO and that in methane closer to each other and increase the selectivity from hydrogen.