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Expired Canadian patentCanada

Washing agent compositions suitable for washing dishes in a washing machine

CA 1235975 A · Owner: Societe Chimique Des Charbonnages S.A. · Inventors: Scotte, Pierre

CIPO record

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Abstract From the Canadian patent

In a washing agent composition suitable for washing dishes in a washing machine, and which contains a softening agent chosen from the polyphosphates, an alkalinity-producing agent chosen from sodium salts containing sodium metasilicate a nonionic surface-active agent and a coated chloroisocyanurate derivative, the chloroisocyanurate derivative is stabilised to prevent significant loss of chlorine and of the surface-active agent through mutual destruction while the composition is in storage. This stabilisation is achieved by coating the chloroisocyanurate derivative with the aid of a polyethylene wax employed in a concentration of 0.3 to 10% by weight relative to the weight of the …

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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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 6, 1984
GrantedMay 3, 1988
Term endedMay 3, 2005
Patent numberCA 1235975 A
Classification (IPC)C11D3/48 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJuly 6, 1984Patent grantedMay 3, 1988Term endedMay 3, 2005

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