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Expired Canadian patentCanada

Apparatus comprising poly(cyclohexanedimethanol terephthalate) and process therefor

CA 2561443 C · Owner: Ticona Llc · Inventors: Brennan, James F.

CIPO record

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Abstract From the Canadian patent

An apparatus which comprises two compositions in contact with one another is described. The first composition comprises poly(1,4-cyclohexanedimethanol terephthalate) and a minor amount of poly(1,4-butylene terephthalate) while , the second composition comprises an organic polymeric material. The use of the first composition allows for better adhesion between the two compositions. A process for making such an apparatus by first forming a shaped part from the first composition and then contacting that shaped part with the second composition is also described. The apparatus may be used to encapsulate electrical and electronic parts, and for other uses.

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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 April 26, 2005 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2025.
  • 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.
FiledApril 26, 2005
GrantedJune 26, 2012
Term endedApril 26, 2025
Patent numberCA 2561443 C
Classification (IPC)C08L67/02

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedApril 26, 2005Patent grantedJune 26, 2012Term endedApril 26, 2025

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