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Expired Canadian patentCanada

Matches with fuel, particulate or fibrous filler and adhesive

CA 1109263 A · Owner: Wilkinson Sword Limited · Inventors: Lyall, Robert; Buckle, Valerie A.; Maxwell, Ian

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Abstract From the Canadian patent

Method for the Manufacture of Matches ABSTRACT OF THE DISCLOSURE . A method for the manufacture of matches which comprises applying to a match splint, before the formation thereon of the match head, a surface coating of an aqueous dispersion comprising i) a low melting point solid fuel e.g. paraffin wax ii) a finely divided, particulate or fibrous filler and iii) either a water-immiscible volatile solvent for the fuel or a water-soluble or water-dispersible adhesive, or a mixture of the two; and thereafter drying the coated splint to deposit thereon adjacent the end thereof on which the head, is to be formed, a surface coating comprising a mixture of said fuel and said filler, and, if …

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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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 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.
FiledFebruary 22, 1979
GrantedSeptember 22, 1981
Term endedSeptember 22, 1998
Patent numberCA 1109263 A
Classification (IPC)C06F3/02

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedFeb 22, 1979Patent grantedSep 22, 1981Term endedSep 22, 1998

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