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Expired Canadian patentCanada

Porous ceramic or metallic coatings and articles

CA 1069392 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Bryan, Thomas T.; Pluim, Arthur W. (Jr.)

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 preparing porous ceramic or metallic coatings on substrates and preparing perforated articles which are ceramic or metallic; the method involving utilization of a composition comprising ceramic powder or metallic powder, binder and solvent, whereby at least a portion of the solvent is rapidly volatilized to obtain the porosity in the ceramic or metallic material. The coated substrates and perforated articles are useful for example, as prosthetic devices catalyst supports, and bone supplementation material.

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
  • 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—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069392 A
Classification (IPC)B22F7/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

Sources & verification

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