Expired Canadian patentCanada
Heat-shrinkable, shirrable casings containing polyamide/copolyamide blends
CA 2097669 C · Owner: Ramesh, Ram Kumar · Inventors: Ahlgren, Kelly Ray; Ramesh, Ram Kumar
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Shirrable casings are provided with an internal layer of nylon 6 for oil resistance. At least a minor amount of a copolyamide blended with the nylon 6 improves processability, especially during stretch orientation.
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 3, 1993 and granted July 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 2015.
- 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 3, 1993
GrantedJuly 29, 2003
Term endedJune 3, 2013
Patent numberCA 2097669 C
Classification (IPC)B32B27/08 +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.