Expired Canadian patentCanada
Self-supporting receptacle, especially for use as an electrolysis cell
CA 2012618 C · Owner: Wurm, Franz · Inventors: Korner, Hans; Wurm, Franz
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-supporting receptacle, especially for use as an electrolysis cell, has its walls composed of glass fiber reinforced synthetic resin in a double-shell construction with the shells held apart by spacers.
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 March 20, 1990 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 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.
FiledMarch 20, 1990
GrantedApril 27, 1999
Term endedMarch 20, 2010
Patent numberCA 2012618 C
Classification (IPC)C25B9/00 +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.