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Expired Canadian patentCanada

Microencapsulating composition and kit, and process for producing microcapsules

CA 1332660 C · Owner: Jinno, Kazuhito · Inventors: Jinno, Kazuhito; Yoshimoto, Masahiro; Kataoka, Hironori

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Abstract From the Canadian patent

An improved microencapsulating composition comprising an emulsifying agent and a compound that is capable of reacting with water to form a membrane but which is not reactive with said emulsifying agent is disclosed. Also disclosed are: a microencapsulating composition comprising said first microencapsulating composition and an active ingredient (e.g. agrichemical, flavor, paint liquid, crystal, repellent against pest and rodent fertilizer, cosmetic, pigment, ink, attractant foaming agent, flame, retardant, corrosion inhibitor or mold inhibitor) to be microencapsulated; a process for producing microcapsules using either one of the two microencapsulating compositions; and a kit consisting of …

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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 October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 1989
GrantedOctober 25, 1994
Term endedOctober 25, 2011
Patent numberCA 1332660 C
Classification (IPC)B01J13/02 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMay 16, 1989Patent grantedOct 25, 1994Term endedOct 25, 2011

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