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Expired Canadian patentCanada

Soap free conveyor lubricant that gives clear solutions in water

CA 1331175 C · Owner: Ecolab Inc. · Inventors: Schmitz, Karl-Heinz; Scharf, Rolf

CIPO record

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Abstract From the Canadian patent

The invention relates to aqueous clear solution-, forming, substantially soap free lubricant compositions and to the use of the lubricant compositions according to the invention, especially as lubricants for the transport of glass bottles or poly(ethylene terephthalate) bottles. The substantially neutral aqueous lubricant compositions (pH 6 - 8) contain alkyl benzenesulfonates, partial phosphate esters with alkoxylated aliphatic alcohols and aliphatic, carboxylic acids, optionally in addition to typical solubilizers, solvents, foam inhibitors and disinfectants.

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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 August 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 2011.
  • 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 18, 1989
GrantedAugust 2, 1994
Term endedAugust 2, 2011
Patent numberCA 1331175 C
Classification (IPC)C10M173/02 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 18, 1989Patent grantedAug 2, 1994Term endedAug 2, 2011

Sources & verification

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