Apparatus for high-yield low-waste conical crushing
CA 2043589 C · Owner: Karra, Vijia K. · Inventors: Karra, Vijia K.; Magerowski, Anthony J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conical crusher designed for high yield low waste, crushing includes a head mantle with a crushing surface having a uniform radius of curvature and a bowl liner with a crushing surface having a uniform radius of curvature the radius of, curvature of the head mantle being distinct from the radius of curvature of the bowl liner.
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 May 30, 1991 and granted July 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.