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:
Sep. 04, 2001
Filed:
Mar. 24, 1999
P. Richard Warburton, Moon Township, PA (US);
Ronald Scott Sawtelle, Indiana, PA (US);
Industrial Scientific Corporation, Oakdale, CA (US);
Abstract
A filter for reducing the cross-sensitivity of a chlorine dioxide detector to hydrogen sulfide. The filter includes a high surface area substrate impregnated with a silver (I) salt or copper (II) salt which is effective to remove hydrogen sulfide from a gas stream without producing undesirable compounds which might be detected by the sensor. The preferred compounds are copper chloride (CuCl,), copper bromide (CuBr,), silver acetate (AgO,CCH,), silver bromate (AgBrO,), silver bromide (AgBr), silver carbonate (Ag,CO,), silver chloride (AgCl), silver chromate (Ag,CrO,), silver cyanide (AgCN), silver iodate (AgIO,), silver oxide (Ag,O), silver perchlorate (AgClO,), silver permanganate (AgMnO,), silver sulfate (Ag,SO,), silver hexafluorophosphate (AgPF,), silver fluoride (AgF), silver tetrafluoroborate (AgBF,), silver iodide (AgI) and silver trifluoromethane sulfonate (AgO,SCF,).