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Expired Canadian patentCanada

Process for producing a metallic dental prosthesis

CA 1292608 C · Owner: Steinke, Rudi · Inventors: Groll, Werner; Klaus, Angela; Rothaut, Josef

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

Faceable dental prostheses with metallic structural matrix may be produced by powder metallurgy without shrinkage and without pores when multimodal metal powder mixtures when required with the addition of glass and ceramics powders are converted with water into a slip, the dental prosthesis is moulded therewith and the slip mass is sintered at a temperature at which the solidus temperature of at least one powder component is exceeded.

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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 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 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.
FiledSeptember 10, 1986
GrantedDecember 3, 1991
Term endedDecember 3, 2008
Patent numberCA 1292608 C
Classification (IPC)A61K6/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 10, 1986Patent grantedDec 3, 1991Term endedDec 3, 2008

Sources & verification

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