Combined electrically heatable converter body
CA 2124157 A1 · Owner: Whittenberger, William A. · Inventors: Whittenberger, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved converter body fox carrying out chemical reactions, such as oxidation, and especially oxidation of pollutant materials in exhaust streams which converter includes, an electrically heatable portion characterized by a multicellular honeycomb monolith and an integral non-electrically heatable multicellular honeycomb "light-off" portion each constructed of thin sheet metal layers. The electrically heatable portion has a surface area of from 200 to 700 square inches and is capable of being rapidly heated to a temperature of from 400 F to 900 F in a period of from about 2 to about 40 seconds from a voltage source delivering at least 500 watts of power and the electrically, heatable …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 24, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.