Method of packaging utilizing pressurized containers
CA 1062671 A · Owner: Continental Can Company · Inventors: Cook, Bert B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Paneling of thin walled metal containers subjected to vacuum conditions after filling is minimized by pressurizing the container at pressures substantially above atmospheric pressure with an inert gas having low absorption in liquids. By imposing an internal positive pressure in the container of about 5 to about 25 psig with a gas such as nitrogen metal containers having, wall thicknesses of 6 mils or less can be utilized in hot filling operations without encountering paneling after the sealed container and its contents have cooled to room temperature.
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.