Expired Canadian patentCanada
Device for extruded string forming around the periphery of a glass sheet
CA 2052265 C · Owner: Hammes, Friedhelm · Inventors: Scholl, Heinz; Hammes, Friedhelm; Friedrich, Hans-Georg
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordRead 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 September 30, 1991 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 30, 1991
GrantedDecember 18, 2001
Term endedSeptember 30, 2011
Patent numberCA 2052265 C
Classification (IPC)B29C48/25
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.