Electrical heating resistance using resistive elements made of carbon/carbon composite material
CA 2070860 C · Owner: Societe Nationale D'Etude Et De Construction De Moteurs D'Aviation "Snec Ma" · Inventors: Giret, Henri; Maumus, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The resistive elements are made up of strips of carbon/carbon composite material that are interconnected by connection pieces that are likewise made of carbon/carbon composite material and that serve both for making electrical connections and for making mechanical connections between the strips. The strips and the connection pieces are assembled together at leastin part by means of their shapes. The resistive elements may be coated in a layer of pyrocarbon.
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 June 9, 1992 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2014.
- 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.