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Expired Canadian patentCanada

Deflashing machine for continuous casting installation and rotor used therewith

CA 2118381 C · Owner: Coppin, Francis · Inventors: Duval, Dominique; Coppin, Francis; Meunier, Jacques

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention concerns a deburring machine for slabs (1) exiting a continuous casting facility and cut to length by oxyacetylene cutting of the type comprising a rotor (10) with flails (11) mounted on its circumference. The rotor (10) comprises an arbor (12) on which are affixed at each end, one web (13) of annular shape and between these two webs (13), pairs (14) of half-webs (15) of half-annular shape adjacent to and opposite from one another. Each pair (14) of half-webs (15) is placed at regular intervals along the length of the arbor (12) and one half-web (15) of each pair (14) is longitudinally offset with respect to the other half-web (15) of the same pair (14). The invention also …

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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 October 18, 1994 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 18, 1994
GrantedMay 5, 1998
Term endedOctober 18, 2014
Patent numberCA 2118381 C
Classification (IPC)B27C1/02 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedOct 18, 1994Patent grantedMay 5, 1998Term endedOct 18, 2014

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.