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Expired Canadian patentCanada

Polycarbonate resin mixtures

CA 1206673 A · Owner: General Electric Company · Inventors: Liu, Ping Y.

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

Novel compositions with improved resistance to environmental stress cracking and crazing comprising (a) an aromatic carbonate polymer; and (b) a modifier combination therefor comprising (i) a thermoplastic olefin polymer insoluble therein; and, (ii) a linear low density polyolefin /

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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 June 24, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 4, 1983
GrantedJune 24, 1986
Term endedJune 24, 2003
Patent numberCA 1206673 A
Classification (IPC)C08L69/00 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedNov 4, 1983Patent grantedJune 24, 1986Term endedJune 24, 2003

Sources & verification

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