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:
Jul. 17, 1990
Filed:
Jun. 27, 1988
William A Whittenberger, Garrettsville, OH (US);
Edward M Smith, Wyncote, PA (US);
William R Alcorn, Cleveland Heights, OH (US);
Wesley P Bullock, Windham, OH (US);
W.R. Grace & Co.-Conn., New York, NY (US);
Abstract
A converter for treating gases to remove pollutants or particulate matter having layers of normally nesting corrugated thin metal foil, with or without a catalyst supported thereon, and characterized by spaced strands of wire or nonvitreous inorganic ceramic thread interposed between the layers to maintain them in spaced relation for the passage of gas, e.g., exhaust gas from an engine or plant, therethrough. The principal advantages are the relatively high particulate trap efficiency, the relatively low back pressure, and the low cost of manufacture.