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Expired Canadian patentCanada

Conditioner for the treatment of base materials

CA 1284576 C · Owner: Grapentin, Hans Joachim · Inventors: Grapentin, Hans Joachim; Tessmann, Detlef; Seidenspinner, Hubert-Matthias

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

The invention relates to a conditioner for the treatment of base materials for subsequent complete and uniform metallization, characterized in that it contains a quaternary organic nitrogen compound.

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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 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 22, 1986
GrantedJune 4, 1991
Term endedJune 4, 2008
Patent numberCA 1284576 C
Classification (IPC)C23C18/18 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 22, 1986Patent grantedJune 4, 1991Term endedJune 4, 2008

Sources & verification

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