Patent Yard Sign in
Expired Canadian patentCanada

Production of ceramic and ceramic-metal composite articles with surface coatings

CA 1307914 C · Owner: Gesing, Adam J. · Inventors: Newkirk, Marc S.; Gesing, Adam J.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The invention comprises a method of making selfsupporting ceramic and ceramic composite structures by the oxidation reaction of a body of molten parent metal precursor with a vapor-phase oxidant to form an oxidation reaction product. This reaction or growth is continued to form a thick, self-supporting ceramic or ceramic composite body. The body is recovered and in a separate subsequent operation at least a portion of a surface is coated with one or more materials in order to effect desired changes in the properties of the surface, e.g. hardness corrosion, resistance.

Read the whole patent

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 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 15, 1987
GrantedSeptember 29, 1992
Term endedSeptember 29, 2009
Patent numberCA 1307914 C
Classification (IPC)C04B35/65 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 15, 1987Patent grantedSep 29, 1992Term endedSep 29, 2009

Sources & verification

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