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. 15, 2003
Filed:
Mar. 03, 1999
Applicant:
Inventors:
Alan Mason Doncaster, Maldon, GB;
Terence David Brown, Chelmsford, GB;
Assignee:
EEV Limited, Chelmsford, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 3/096 ; G01N 3/112 ; G01N 2/700 ; G01N 1/910 ; G01N 3/004 ; G01N 3/002 ; G01N 2/7416 ; G01N 3/3497 ; G01N 7/00 ; B01L 3/00 ; G01J 1/48 ;
U.S. Cl.
CPC ...
G01N 3/096 ; G01N 3/112 ; G01N 2/700 ; G01N 1/910 ; G01N 3/004 ; G01N 3/002 ; G01N 2/7416 ; G01N 3/3497 ; G01N 7/00 ; B01L 3/00 ; G01J 1/48 ;
Abstract
In a catalytic sensor, a bead is located within a can having an aperture in its front surface. The bead is surrounded by thermally insulating material such as glass fiber and a filter material is arranged between the bead and the aperture in the can. This acts to remove H S or other inhibiting gases before they reach the bead and impair its performance. The thermally insulating material allows the filter material to be included whilst still permitting the bead to be operated at a high temperature.