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Expired Canadian patentCanada

Method and apparatus for making a dental prosthesis and product therefrom

CA 1301495 C · Owner: Lopata, Ira I. · Inventors: Marshall, Howard B.; Lopata, Ira I.; Kaye, Gordon E.

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

An apparatus for making and method for forming a dental prosthesis in situ in an edentulouos space defined either adjacent to two existing teeth or between a fixed tooth and a second tooth posterially positioned with respect to the first tooth, and lightly touching the associated gum surface, utilizes a bridge bar assembly having at least one shaped connecting member to be adjustably mounted and connected in the drilled grooves of adjacent teeth a boss, on the bridge bar assembly, and a pontic base adjustably mounted on the boss such that when the bridge bar assembly is in assembled position in the edentulous space for connection to the teeth, the pontic base lightly touches the gum, two …

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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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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 1, 1987
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301495 C
Classification (IPC)A61C13/00 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 1, 1987Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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