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Expired Canadian patentCanada

Stable liquid detergent containing insoluble oxidant

CA 1315641 C · Owner: Chen, Loren · Inventors: Van Buskirk, Gregory; Peterson, David; Gray, Robert L.

CIPO record

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Abstract From the Canadian patent

of the Invention, The invention provides a phase stable liquid detergent containing at least one insoluble oxidant comprising:, a) a liquid phase which comprises: i) an effective amount of at least one surfactant selected from the group consisting of anionic, nonionic, cationic amphoteric, zwitterionic surfactants, and mixtures thereof; ii) a liquid carrier therefore, comprising organic solvents water, or a, mixture thereof; and, b) an effective amount of a water insoluble oxidant stably suspended in said liquid phase, which maintains oxidative stability, said water insoluble oxidant being an alkaline earth metal peroxide or a Group IIB peroxide.

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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 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • 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 27, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315641 C
Classification (IPC)C11D3/39 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 27, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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