Wear resistant molding compositions
CA 2040155 A1 · Owner: Shu, Peter H. C. · Inventors: Price, Ronald L.; Shu, Peter H. C.; Witman, Mark W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-3408, PC-231, WEAR RESISTANT MOLDING COMPOSITIONS ABSTRACT OF THE DISCLOSURE, The invention relates to thermoplastic molding compositions and to articles molded therefrom which comprise a, siloxane copolycarbonate and an additive amount of an ultra high molecular weight polyethylene. The compositions are useful in the preparation of molded articles having an exceptionally high resistance to friction induced wear.
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 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2013.
- 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.