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Expired Canadian patentCanada

Orthosis for metatarsus adducts

CA 1308617 C · Owner: Chong, Andrew K.C. · Inventors: Chong, Andrew K.C.

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

A brace made of rigid thermoplastic material that retains the corrective features of a corrective cast without the disadvantages of a cast. The brace securely encloses the heel and the medial portion of the foot up to or slightly beyond the tip of the big toe on the medial side only. A strap adjustably secured to the brace, directs a corrective force on the apex of the deformity on the lateral aspect of the foot thus effecting, correction. The brace has a leg-embracing component which includes a strap for preventing the heel from pulling away from the brace.

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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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.
FiledNovember 20, 1985
GrantedOctober 13, 1992
Term endedOctober 13, 2009
Patent numberCA 1308617 C
Classification (IPC)A61F5/00 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedNov 20, 1985Patent grantedOct 13, 1992Term endedOct 13, 2009

Sources & verification

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