Compositions containing starch and/or modified starch and plasticisers
CA 2295619 A1 · Owner: Aventis Research & Technologies Gmbh & Co. Kg · Inventors: Grande, Jurgen; Bengs, Holger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to compositions with a starch and/or modified starch base containing plasticisers in the form of polyhydroxy carboxylic acids or lactones thereof, derived from aldoses and/or ketoses especially from pentoses and hexoses. The inventive compositions can be processed thermoplasticalty to form biodegradable physiologically , harmless shaped bodies which can be used for packaging and covering food or pharmaceutical products or for the controlled release of , active substances or for producing temporary skin-packs.
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 June 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2020.
- 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.