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Expired Canadian patentCanada

On-line reclaim system

CA 1105221 A · Owner: Standard Oil Company · Inventors: Grant, Charles L.; Godfrey, Jack F.

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

An improved method and machine for reclaiming in an online configuration both oriented and unoriented film produced on an extrusion line, in general, and an improved means within an on-line reclaim system for transferring both virgin resin and chopped reclaim to an in-line extruder in particular, are, disclosed.

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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
  • 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 31, 1978
GrantedJuly 21, 1981
Term endedJuly 21, 1998
Patent numberCA 1105221 A
Classification (IPC)B29C48/25 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 31, 1978Patent grantedJuly 21, 1981Term endedJuly 21, 1998

Sources & verification

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