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Expired Canadian patentCanada

Curable composition

CA 1112791 A · Owner: Mita, Tetsuo · Inventors: Tani, Nobutaka; Mita, Tetsuo; Takase, Junji

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A curable composition which comprises 100 parts by weight of (A) an organic polymer containing at least one hydrolyzable silicon group per polymer molecule and having a molecular weight of from 300 to 15,000, 0.01-10 parts by weight of (B) a tin (II) salt of an organic carboxylic acid and/or a lead (II) salt of an organic carboxylic acid and 0.001-10, parts by weight of (C) an acidic material and/or a basic material. These compositions exhibit remarkable set resistance.

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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 November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1979
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112791 A
Classification (IPC)C08L83/00 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJuly 6, 1979Patent grantedNov 17, 1981Term endedNov 17, 1998

Sources & verification

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