Sealable and sterilizable package
CA 1062661 A · Owner: Alcan Research And Development Limited · Inventors: Sturm, Winfried G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package made of metal foil or light-gauge sheet having a bottom, and lid each lined internally with a lacquer and heat-sealed together by means of the lacquer to provide a sealed, sterilizable shelf-stable container for, food or the like which does not require refrigeration for storage. The lid is manually peelable from the bottom, with defoliation of the lid lining along the locality of the seal, providing a neat and attractive appearance for the opened container. Specifically different vinyl resin based lacquer systems which may be employed for the bottom ant lit linings are disclosed. The packages of the invention are particularly useful for the packaging of foodstuffs for retail sale. …
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 18, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 18, 1996.
- 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.