Construction of ceramic plaque burners
CA 2006147 C · Owner: Constable, Alan · Inventors: Hinton, Alan V.; Constable, Alan; Smith, Martin L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present specification relates to a ceramic plaque burner and to its method of construction. The plaque burner is formed as a generally planar plate with a number of parallel, narrow slit burner apertures extending therethrough. The present invention provides a ceramic plaque burner comprising a number of elongate ceramic members which are arranged parallel to each other with spacers located therebetween a bezel, engaging around the elongate ceramic members and said spacers to hold the assembly together. This construction is relatively simple and inexpensive to manufacture and avoids the problem of thermal stress cracking at the end regions of the burner slits.
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 December 20, 1989 and granted June 15, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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.