Shirred stick of tubular casing material
CA 1086558 A · Owner: Canadian Industries Limited · Inventors: Marz, Horst F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved shirred stick of tubular film casing material is provided wherein the bore of the shirred portion of the stick is lined with an extended end length portion of unshirred tubing which is connected in leak-proof fashion to the filling horn of a filling apparatus. The improved stick protects against backflow of product into and through the shirred stick and prevents ingress of air into the package. The need to use dynamic seals to prevent product loss is eliminated.
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
- Granted September 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 30, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.