Method for heating the surface of an antenna dish
CA 2252107 C · Owner: Rolls, John A. · Inventors: Rolls, John A.; Miller, Charles G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for heating the surface of a material such as a floor wall, roof, countertop or an antenna dish. The method comprises providing a laminated composite heater element disposing the heater element at a predetermined depth in the material and energizing the element at prescribed intervals and temperatures which are effective to heat the surface of the material.
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 April 18, 1997 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 18, 2019.
- 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.