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Expired Canadian patentCanada

Rinse aid compositions containing amino-silanes

CA 1189757 A · Owner: The Procter & Gamble Company · Inventors: Wevers, Jean; Walker, John R.; Barrat, Christian R.

CIPO record

Overview

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

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Abstract From the Canadian patent

A liquid rinse aid fox use in automatic dishwashing machines comprises a low foaming ethoxylated nonionic surfactant, an organic chelating agent a hydrotrope-water, solubilizing system and 0.05-10% by weight of the rinse, aid, of an amino-silane.

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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 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 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.
FiledSeptember 23, 1982
GrantedJuly 2, 1985
Term endedJuly 2, 2002
Patent numberCA 1189757 A
Classification (IPC)C11D3/30 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedSep 23, 1982Patent grantedJuly 2, 1985Term endedJuly 2, 2002

Sources & verification

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