Acrylic polymers for molding
CA 2174694 C · Owner: Relvini, Pasquale · Inventors: Relvini, Pasquale; Anghileri, Andrea; Fatica, Michele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of monovalent salts of saturated and unsaturated fatty acids C10-C18 as external lubricants in granules formulation based on acrylic polymers for injection molding at temperatures from 180°C-220°C of articles having a thickness greater than l0mm preferably the lubricant amount is from 10 to 100 ppm; and related compositions.
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 April 22, 1996 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2018.
- 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.