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Expired Canadian patentCanada

Substituted glutaric and adipic diperoxyacids

CA 1261875 A · Owner: The Procter & Gamble Company · Inventors: Gosselink, Eugene P.; Clauss, Allen D.

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Abstract From the Canadian patent

Novel peroxyacids of the formula: wherein X is an alkylene group selected from propylene and butylene, R is alkyl containing from 4 to 12 carbon atoms benzyl, or phenyl and m is 1 or 2. The compounds are useful as disinfectants and fabric bleaches.

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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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 12, 1986
GrantedSeptember 26, 1989
Term endedSeptember 26, 2006
Patent numberCA 1261875 A
Classification (IPC)C07C409/24 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 12, 1986Patent grantedSep 26, 1989Term endedSep 26, 2006

Sources & verification

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