Canadian application, no grantCanada
Connection of an end piece with a cardboard tube core
CA 2239236 A1 · Owner: Pelikan Produktions Ag · Inventors: Burgin, Markus
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 tube-shaped stub (5) of the end piece (2) is inserted into the core (1). The stub (5) has, adjacent to the free end, hook-like projections (11). This achieves secure anchoring of the end piece (2) in the core (1) even under changing climatic conditions.
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 May 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 29, 1998
GrantedNo grant recorded
Term endedMay 29, 2018
Patent numberCA 2239236 A1
Classification (IPC)B65H75/22 +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.