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Expired Canadian patentCanada

Catalytic filler for electroless metallization of hole walls

CA 1067879 A · Owner: Kollmorgen Corporation · Inventors: Leech, Edward J.

CIPO record

Overview

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

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Abstract From the Canadian patent

Improved catalytic fillers result from the use of hydrazine to render reducible metal salts adsorbed on filler material surfaces catalytic to the deposition of electroless metal. Use of such catalytic fillers in forming insulated articles in which holes are made lead to improved electroless metallization of the barrels of such holes.

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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 December 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 11, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedDecember 11, 1979
Term endedDecember 11, 1996
Patent numberCA 1067879 A
Classification (IPC)B01J35/12 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedDec 11, 1979Term endedDec 11, 1996

Sources & verification

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