Plasto-elastic polypropylene compositions
CA 2015683 C · Owner: Montell North America Inc. · Inventors: Cecchin, Giuliano; Guglielmi, Floriano
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polypropylene compositions having valued plasto-elastic properties, in the form of spheroidal flowable particles with an average diameter included between 500 and 7000 um having the following composition:, A) 10-60 parts by weight of homopolymer polypropylene with isotactic index greater than 90, or of crystalline propylene copolymer writh ethylene and/or an alpha olefin such as butane-1, pentene 1 or 4-methyl-1-pentane containing over 85% by weight of propylene and having an isotactic index greater than 85;, B) 10-40 parts by weight of a polymer fraction containing ethylene, insoluble in xylene at roars temperature; C) 30-60 darts by weight of an amorphous copolymer ethylenepropylene …
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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 April 27, 1990 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2012.
- 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.