Package having collar enclosure
CA 2072022 A1 · Owner: Oscar Mayer Foods Corporation · Inventors: Grindrod, Paul E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package of the type having a tray (11) with recessed compartments (20-26) for receiving food products or the like (20a-26a) the tray being covered by a thin flexible and preferably transparent film (30) which seals the products in their respective compartments (20-26). The outer enclosure is formed by a stiff collar (12) which completely encircles the tray (11) with the sides of the collar (12) turned downwardly and inwardly to provide frictional and resilient engagement of the collar (12) with the sides of the tray. The collar also includes a stiff support flap (45 46) which, enables it to stand on end.
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 December 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2012.
- 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.