Coated porous metal panel and method
CA 2087698 C · Owner: Allison Engine Company, Inc. · Inventors: Junod, Larry Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coated porous metal panel includes a first outer surface on one side of the panel a second outer, surface on the other side of the panel a plurality of, laterally offset discharge and inlet pores in respective ones of the first and the second outer surfaces, an internal chamber in the panel communicating with each of the inlet and discharge pores o that tortuous gas flow path are defined through the porous metal panel, and a shield lamina mechanically clamped against the second outer surface. The shield lamina has shield pores aligned with the inlet pores to permit gas flow into the inlet pores. A plurality of extraction passages are formed in the panel between the internal chamber and …
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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 January 20, 1993 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2015.
- 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.