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Expired Canadian patentCanada

Composite skin and stringer structure and method for forming the same

CA 2601827 C · Owner: Kismarton, Max U. · Inventors: Kismarton, Max U.

CIPO record

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Abstract From the Canadian patent

Composite stringer and skin structures and methods for forming the same are disclosed. , In one embodiment, a composite stringer and skin structure includes a polymerbased elongated , stringer portion having reinforcing fibers positioned in a plurality of adjacent plies, a first portion , of the reinforcing fibers being oriented at a relatively shallow angle relative to a selected , reference direction and a second portion of the reinforcing fibers being oriented at a relatively , broad angle relative to the selected reference direction. A polymer-based and fiber reinforced , skin member adjoins the stringer portion and an adhesive material is , interposed between the stringer portion …

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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

  • Filed March 22, 2006 and granted December 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 22, 2006
GrantedDecember 17, 2013
Term endedMarch 22, 2026
Patent numberCA 2601827 C
Classification (IPC)B64C1/12 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 22, 2006Patent grantedDec 17, 2013Term endedMarch 22, 2026

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