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Expired Canadian patentCanada

Adhesive agent containing microcapsules

CA 1236618 A · Owner: Kureha Kagaku Kogyo Kabushiki Kaisha · Inventors: Takahashi, Masaaki; Igarashi, Yuriko

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Abstract From the Canadian patent

TITLE OF THE INVENTION:, ADHESIVE AGENT CONTAINING MICROCAPSULES ABSTRACT OF DISCLOSURE:, Disclosed herein are an adhesive agent containing microcapsules, comprising said microcapsules consisting essentially of a core substance of at least one of the components constructing said adhesive agent and as a material for the membrane of said microcapsule, an aminoplast preliminarily treated by a modifier, and, a medium consisting of the other components constructing said adhesive agent, said microcapsules dispersing in said medium and said adhesive agent being the type of chemical reaction or the type of solvent activation and a process for, preparing the same.

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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 May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 12, 1984
GrantedMay 10, 1988
Term endedMay 10, 2005
Patent numberCA 1236618 A
Classification (IPC)B01J13/02 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJan 12, 1984Patent grantedMay 10, 1988Term endedMay 10, 2005

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