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Expired Canadian patentCanada

Stable aqueous peroxy-containing concentrate

CA 1081079 A · Owner: Sterling Drug Inc. · Inventors: Beilfuss, Wolfgang; Eggensperger, Heinz

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

A stable aqueous peroxy-containing concentrate containing by weight of the concentrate 8 to 45 percent of perglutaric acid; 5 to 10 percent of hydrogen peroxide; 0.01 to 5 percent of a stabilizing agent for the perglutaric acid and hydrogen peroxide; and the remainder to 100 percent water.

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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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 8, 1980
Term endedJuly 8, 1997
Patent numberCA 1081079 A
Classification (IPC)C11D7/60 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJuly 8, 1980Term endedJuly 8, 1997

Sources & verification

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