Mandrel structure for use in manufacture of cellulose food casing
CA 2345193 A1 · Owner: Mcgarel, Owen Joseph · Inventors: Long, Larry Clyde; Jerantowski, Ronald Joseph; Albert, James Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a mandrel structure for extruding a tube composed of a non derivatized cellulose. The mandrel includes a hollow sizing portion having openings which, gather gas bubbles that may evolve at the interface between the extruded tube and the, sizing portion and allows the gas to pass into the hollow interior of the mandrel.
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 April 26, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2023.
- 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.