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Expired Canadian patentCanada

Single component cold pressure fixable encapsulated toner composition

CA 1237342 A · Owner: Xerox Corporation · Inventors: Fuller, John R.; Breton, Marcel P.; Lok, Kar P.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Disclosed is an improved single component cold pressure fixable toner composition comprised of a core containing (1) magnetite particles, and a styrene-butadiene-styrene triblock polymer and a polymeric shell material generated by an interfacial polymerization process.

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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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1985
GrantedMay 31, 1988
Term endedMay 31, 2005
Patent numberCA 1237342 A
Classification (IPC)G03G9/08 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedApril 10, 1985Patent grantedMay 31, 1988Term endedMay 31, 2005

Sources & verification

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