Method for producing biodegradable packaging from biaxially drawn film
CA 2440177 C · Owner: Schischko, Jurgen · Inventors: Busch, Detlef; Schischko, Jurgen; Rosenbaum, Sonja (Deceased)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for producing a plastically moulded biaxially drawn PLA film. According to said method a biaxially drawn PLA film , is heated to a high temperature and is plastically moulded by a pneumatic or mechanical force, or by a combination of pneumatic and mechanical force. The invention also relates to packaging produced from biaxially drawn plastically , moulded PLA film of this type and to a method for producing said packaging and the use thereof.
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 March 7, 2002 and granted May 24, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2024.
- 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.