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:
Jan. 27, 2004
Filed:
Apr. 02, 2002
Michael John Mills, Columbus, OH (US);
Kenneth Henry Sandhage, Upper Arlington, OH (US);
Pelagia-Irene Gouma, Columbus, OH (US);
The Ohio State University, Columbus, OH (US);
Abstract
The present invention includes free-standing, shaped ceramic-bearing bodies useful in fluid sensors, filters, and catalyst devices. The invention also includes methods and processes for using such devices. In a preferred embodiment of the invention, shaped metallic foils are converted into free-standing, porous rutile foils having an open pore structure by oxidation at an elevated temperature. The exposure of such foils to increasing concentrations of reducing gases such as carbon monoxide results in an increase in the steady-state electrical resistance. The resultant ceramic-bearing bodies may be used as effective sensors of reducing gas species in such applications as automobile and industrial emissions. The ceramic-bearing bodies may also be used to filter out a species of a fluid, or solid particulates contained in the fluid, or catalyze reactions of a species in the fluid, such as effectively changing a harmful species like hydrocarbon gases into a relatively harmless species such as carbon dioxide and water vapor before releasing the fluid into the atmosphere, etc.