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Expired Canadian patentCanada

Solid waste processing facility and process

CA 1323016 C · Owner: Wiens, Thomas J. · Inventors: Wiens, Thomas J.

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 present invention relates to a process and a facility for treating solid waste to recover recyclable materials and to form a compost from a biodegradable fraction within the solid waste. The process and facility lend themselves to efficiently recovering useful materials such as corrugated paper ferrous, metals, non-ferrous metals, plastic products paper, and, other redeemables such as glass containers. Various process steps are employed to recover these materials.

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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

  • Granted October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
  • 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 25, 1989
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1323016 C
Classification (IPC)B03B9/06 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 25, 1989Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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