Apparatus and process for generating radiant energy
CA 2005416 C · Owner: Best, Willie H. · Inventors: Best, Willie H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A radiant wall structure including a radiant emitting wall and a second wall spaced from the radiant emitting wall to define a combustion chamber therebetween. A line burner is positioned in the combustion chamber and delivers heated gases upwardly through the combustion chamber. The distance between the radiant emitting wall and the second wall is selectively varied to vary the velocity of the heated gases passing through the combustion chamber, to thereby selectively control the energy transferred to the radiant emitting wall.
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 13, 1989 and granted April 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 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.