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Chiral polymer compositions exhibiting nonlinear optical properties

CA 2300225 A1 · Owner: Molecular Optoelectronics Corporation · Inventors: Gordon, Janet L.; Gascoyne, David G.; Chan, Kwok Pong

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Abstract From the Canadian patent

Chiral organic polymers doped with or appended by nonlinear optical dyes are disclosed. The use of chiral polymers produces a more stable noncentrosymmetric, environment for the dye molecules resulting in unexpectedly long relaxation times as, compared with previously used organic polymers. In addition the NLO/chiral , polymer, materials exhibit high electro-optical coefficients (r33) high nonlinear , optical coefficients, (d33) improved long-term thermal stability, and at the same time retain the processing, advantages associated with organic polymers. Thus the present NLO/chiral , polymer, materials are extremely well-suited for use in second-order nonlinear optical and, …

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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 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2022.
  • 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 8, 2000
GrantedNo grant recorded
Term endedMarch 8, 2020
Patent numberCA 2300225 A1
Classification (IPC)C08J3/20 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedMarch 8, 2000Term endedMarch 8, 2020

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