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Expired Canadian patentCanada

Method for the treatment of wood by a wood preserving agent, as well as wood treated with such a wood preservative agent

CA 1102961 A · Owner: Hoeka Sierpleisters En Muurverven B.V. · Inventors: Van Keulen, Jacobus M.; Blom, Cornelis W.

CIPO record

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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 method for the treatment of wood by a wood preserving agent in a liquid or pasts-like form, to be positioned (inserted) in a recess in the wood, which recess is subsequently sealed off. The wood preserving agent contains a water-expelling agent a water-repellent agent and a biocide.

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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 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.
FiledMarch 29, 1978
GrantedJune 16, 1981
Term endedJune 16, 1998
Patent numberCA 1102961 A
Classification (IPC)B27K5/00 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 29, 1978Patent grantedJune 16, 1981Term endedJune 16, 1998

Sources & verification

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