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Expired Canadian patentCanada

Apparatus and method for processing medical waste

CA 2069430 C · Owner: Sharp, James W. · Inventors: Sharp, James W.; Held, Jeffery S.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A method and facility (12) are used to process medical waste. Medical waste is disintegrated or shredded disinfected with, radio-frequency electromagnetic radiation and then transformed into useful material such as reclaimed plastic and refuse-derived fuel. The medical waste arrives in boxes (10) and is unloaded onto a conveyor belt (14) where all boxes (10) in each load are segregated and counted. A shredder load conveyor (16) carries the boxes (10) into a pre-progressing room (10) contains the shredder (20) and a screw conveyor (22) which are designed to disintegrate medical waste into fragments and move the fragments to other containers (34) through a tunnel (40) for disinfection by the …

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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 September 18, 1991 and granted December 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 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.
FiledSeptember 18, 1991
GrantedDecember 22, 1998
Term endedSeptember 18, 2011
Patent numberCA 2069430 C
Classification (IPC)A61L2/08 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedSep 18, 1991Patent grantedDec 22, 1998Term endedSep 18, 2011

Sources & verification

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