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Expired Canadian patentCanada

Heat cross-linkable polymer compositions and their production process

CA 1248271 A · Owner: Huls Aktiengesellschaft · Inventors: Herrmann, Christoph; Gorke, Klaus; Streck, Roland

CIPO record

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Abstract From the Canadian patent

Heat cross-linkable polymer compositions and their production process, The present invention relates to heat cross-linkable masses that consists of a binding agent and conventional additives, additives that catalyse the cold cross-linking being excluded, and a process for producing cold cross-linking masses such that a binding agent, an effective quantity of one of the additives that catalyst the cold cross-linking and additional, conventional additives are mixed together. The binding agent is a combination of two binding agents that are capable of crosslinking with each other without the addition of a cross-linking agent. These binding agents are a polymer that bears primary and/or a …

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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 January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
  • 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 7, 1985
GrantedJanuary 3, 1989
Term endedJanuary 3, 2006
Patent numberCA 1248271 A
Classification (IPC)C08L9/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedOct 7, 1985Patent grantedJan 3, 1989Term endedJan 3, 2006

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