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Expired Canadian patentCanada

Cleaning paste with soluble abrasive

CA 1310879 C · Owner: Lancz, Albert Jay · Inventors: Lancz, Albert Jay

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

A hard surface highly viscous cleaning composition comprising by weight about 65-80% of an organic liquid vebicle consisting essentially of about 15-35%, water miscible organic solvents and about 35-70% of a nonionic surfactant mixture containing an ethoxylated fatty acid as one of the surfactants, and sodium hydroxide which reacts in situ with the ethoxylated fatty acid to form a clear organic, nonflowable gelled vehicle substantially free of water. Another feature of this invention is the stable suspension of about 10-25% of a water soluble particulate builderabrasive in said nonflowable organic gel which is in the form of a viscous cleaning gel product.

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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 December 1, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 2009.
  • 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 13, 1988
GrantedDecember 1, 1992
Term endedDecember 1, 2009
Patent numberCA 1310879 C
Classification (IPC)C11D17/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 13, 1988Patent grantedDec 1, 1992Term endedDec 1, 2009

Sources & verification

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