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Expired Canadian patentCanada

Foamed insulating refractory

CA 1186348 A · Owner: The Babcock & Wilcox Company · Inventors: Britt, James M.; Logue, Charles C.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

An unfired foamed-in-place two component insulating refractory and the method for preparing the same. The composition is composed of hydraulic cement water and an, acid, though it can also include an aggregate and/or fine grain inert filler. In the process, the dry ingredients are mixed with the water to form a slurry and thereafter the acid is added to the slurry and passed through a passive mixer before the acid-slurry mixture is discharged and allowed to foam and set.

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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 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2002.
  • 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 21, 1982
GrantedApril 30, 1985
Term endedApril 30, 2002
Patent numberCA 1186348 A
Classification (IPC)C04B38/02 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedApril 21, 1982Patent grantedApril 30, 1985Term endedApril 30, 2002

Sources & verification

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