Fiber wound plastic beverage can
CA 1270214 C · Owner: Shell Oil Company · Inventors: Singhal, Surendra Nath; Lo, King Him; Schmeal, Walter Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention A carbonated beverage can which will withstand pressure from carbonated beverages without bursting or excessive swelling which comprises a can wall made up of a thermoplastic core fiber-adhesive wound, layers contiguous to the thermoplastic core and a barrier layer contig-, uous to or within the thermoplastic core or contiguous to or within the fiber-adhesive wound layers.
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 June 12, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 2007.
- 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.