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Expired Canadian patentCanada

Detergent compositions

CA 1112536 A · Owner: Johnson & Johnson · Inventors: Verdicchio, Robert J.; Lindemann, Martin K.O.

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 improved non-irritating or low irritating detergent composition exhibiting good foaming properties is disclosed. The composition is a synergistic mixture of an amphoteric surfactant and a phosphobetaine or phosphitaine surfactant.

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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.
FiledApril 26, 1979
GrantedNovember 17, 1981
Term endedNovember 17, 1998
Patent numberCA 1112536 A
Classification (IPC)C11D1/66 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 26, 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.