Expired Canadian patentCanada
Current conducting roller
CA 2018741 C · Owner: Jacques, Claude · Inventors: Jacques, Claude
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Current-conducting roller, in particular for continous electrolysis lines comprising in self-evident fashion a steel body (120) characterized by the fact that it includes at least over part of its length, an internal band made of copper (130).
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 11, 1990 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 1990
GrantedFebruary 23, 1999
Term endedJune 11, 2010
Patent numberCA 2018741 C
Classification (IPC)C25B9/04 +2 more
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.