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Expired Canadian patentCanada

Flame retarding resin composition

CA 1083284 A · Owner: Idemitsu Kosan Company Limited · Inventors: Sugi, Norio; Kaji, Hidehiko; Hirai, Takahiro

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

A flame retarding resin composition comprising a mixture in specific ratios of polypropylene polyethylene, in-, organic filler and a flame retardant is disclosed. The organic resin can be used to construct fire resistant items as for example thin mouldings for use in electrical machinery and appliances that will have a high burning resistance and will not be subject to the problem of fusion dropping at conbustion temperatures.

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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 August 5, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 19, 1977
GrantedAugust 5, 1980
Term endedAugust 5, 1997
Patent numberCA 1083284 A
Classification (IPC)C08L23/12 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedJan 19, 1977Patent grantedAug 5, 1980Term endedAug 5, 1997

Sources & verification

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