Clarifying compositions, process for making and polyolefin compositions containing them
CA 2118479 A1 · Owner: Montell North America Inc. · Inventors: Metrick, Joseph; Abata, Jeffrey D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Disclosed is a clarifying composition consisting essentially of a phosphonite stabilizer composition the main, component of which is tetrakis-(2,4-di-tert-butylphenyl)-4,4biphenylene diphosphite, with certain sorbitol based compounds having a melting point of greater than 200°C a process for, preparing said clarifying compositions and polyolefin compositions containing the clarifying composition.
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 October 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2016.
- 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.