Self-regulating heating element and a process for the production thereof
CA 1332280 C · Owner: Legros, Francois Alain · Inventors: Dalle, Bernard; Caillot, Claude Marie-Jose; Legros, Francois Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-regulating heating element, and a process for the production thereof A B S T R A C T, A self-regulating heating element (1) comprising a crosslinked copolymer based on ethylene and a comonomer of vinyl acetate in which the proportion of vinyl acetate is less than 10% and more than 2% by weight more especially from 9 to 2% by weight and in practice, from 9 to 5% by weight, said copolymer containing from 13 to 30% by weight carbon black and having a ratio of greater than 104. Figure 1
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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
- Granted October 11, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 11, 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.