An article having a high friction surface, an apparatus and a method for producing said article
CA 2071952 C · Owner: Neff, Charles · Inventors: Neff, Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A product and a process for producing a matrix and a tool for use in abrasive or cutting applications including a base tool structure which may be armed with a plurality of triangular or conically shaped structures (24B) consisting of abrasive particles (32) bonded together in a braze metal (38). The structures (24B) may be prepared in a manner which provides a selectable rake angle. Rake angles including negative (46) neutral (46') and positive (46") , may be produced. The process is accomplished by diffusing magnetizable abrasive particles on a release mechanism which has been placed on a reusable fixture (10) consisting of a plurality of balls (16) secured to a magnetized surface …
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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 December 20, 1990 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 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.