Abrasive filaments comprising abrasive filled thermoplastic elastomer, methods of making same, articles incorporating same, and methods of using said articles
CA 2124833 A1 · Owner: Zemke, Joy D. · Inventors: Hardwick, R. Eugene; Welygan, Dennis G.; Hayes, Duane J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An abrasive filament including a thermoplastic elastomer having abrasive particles dispersed and adhered therein exhibits, improved life over previously known abrasive-filled polymeric filaments. Previously known abrasive-filled nylon filaments have limited stiffness and lose their stiffness as temperatures approach 70 ·C. The abrasive filaments of the present invention are more efficient and more resistant to flex fatigue failure than abrasive-filled nylon filaments. Methods of making abrasive filaments of the invention, articles including the abrasive filaments and methods, of abrading surfaces using the abrasive articles of the invention are also described.
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 February 11, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2015.
- 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.