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Expired Canadian patentCanada

Self-assembling block copolymer film

CA 2602104 C · Owner: Ferhyhough, Christine · Inventors: Fairclough, John Patrick Anthony; Ferhyhough, Christine; Tzokova, Nadejda Todorova

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 multilayer light reflective, variable interlayer separation (d-spacing) cross- linked self-assembling block copolymer film or coating wherein a property of the reflected light can be changed by varying the interlayer separation (d-spacing) of the film or coating.

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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 30, 2006 and granted May 27, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 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 30, 2006
GrantedMay 27, 2014
Term endedMarch 30, 2026
Patent numberCA 2602104 C
Classification (IPC)G02B1/04

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedMarch 30, 2006Patent grantedMay 27, 2014Term endedMarch 30, 2026

Sources & verification

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