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:
Nov. 10, 1998
Filed:
Jun. 02, 1997
Applicant:
Inventors:
Takashi Shimada, Kanagawa-ken, JP;
Youji Nawa, Kanagawa-ken, JP;
Assignee:
Japan Pionics Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G08B / ;
U.S. Cl.
CPC ...
2524081 ; 422 56 ; 422 86 ; 422 88 ; 436 84 ; 436183 ; 502241 ; 502259 ; 502260 ; 502405 ; 502439 ;
Abstract
A detecting agent for detecting at least one member selected from the group consisting of halogen gases and acidic gases which is contained in a gas, wherein the detecting agent comprises a discoloring component which comprises a hydroxide of a transition metal and Congo Red. Halogen gases and acidic gases which are contained in hydrogen, nitrogen, argon, or helium can be detected under a dry condition with a high sensitivity in accordance with the present invention.