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Expired Canadian patentCanada

Binder

CA 1165337 A · Owner: Kievsky Inzhenerno-Stroitelny Institut · Inventors: Rostovskaya, Galina S.; Timkovich, Vasily J.; Pankratov, Vitaly L.

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Abstract From the Canadian patent

A binder comprises granulated blast furnace slag a, compound of an alkali metal, and an additive selected from the group consisting of portland cement clinker sodium, sulphate, potassium sulphate. The components of the binder are taken in the following ratio, % by weight: - granulated blast furnace slag...........79 to 98.5 - compound of an alkali metal.............1 to 12 - additive selected from the group consisting of portland cement clinker, sodium sulphate potassium, sulphate.................................Ø5 to 9 The advantage of the present binder consists in high operation characteristics thereof as compared to those of the prior art binder based on granulated blast furnace slags.

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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 4, 1981
GrantedApril 10, 1984
Term endedApril 10, 2001
Patent numberCA 1165337 A
Classification (IPC)C04B7/14

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedSep 4, 1981Patent grantedApril 10, 1984Term endedApril 10, 2001

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