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. 22, 1992
Filed:
Sep. 16, 1991
Wesley P Bullock, Windham, OH (US);
W. R. Grace & Co.-Conn., New York, NY (US);
Abstract
There is provided an electrically heatable catalytic monolith composed of a bundle of layers of corrugated thin metal strips in contiguous relation in an electrically parallel circuit, the bundle being accordion folded and having electrical contacts at each end of the bundle and insulation between contiguous folds of the bundle. There is also provided a catalytic converter having a housing, a nonelectrically heatable catalytic monolith and an electrically heatable catalytic monolith as above described in tandem relation in the housing. The primary purpose of the devices hereof is to enable preheating of the catalyst to near optimum temperature for catalytic treatment of a gas, e.g. exhaust gas from an internal combustion engine, to overcome pollution at the time of start-up of the engine and until equilibrium temperature of the unit is achieved.