Expired Canadian patentCanada
Pin seam with double end loops and method
CA 2216966 C · Owner: Schroder, Ernst · Inventors: Fickers, Gisela; Kuckart, Stephanie; Schroder, Ernst
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 papermakers fabric has double pin seam loops on each end for enabling it to be seamed to form an endless form for use on a papermaking machine. A seaming method for making double seaming loops is also provided.
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 November 13, 1996 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 13, 1996
GrantedJanuary 11, 2000
Term endedNovember 13, 2016
Patent numberCA 2216966 C
Classification (IPC)D21F1/12 +1 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.