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Expired Canadian patentCanada

Spray-dried alcohol ether sulfate detergent compositions

CA 1048412 A · Owner: Witco Chemical Corporation · Inventors: Mausner, Marvin L.; Benson, Albert

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

Dry powder compositions in the form of spray dried beads comprising an alcohol ether sulfate magnesium sulfate, and a buffer are found particularly suitable for providing a substantially dust-free and Ph stable bubblebath formulation.

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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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedFebruary 13, 1979
Term endedFebruary 13, 1996
Patent numberCA 1048412 A
Classification (IPC)C11D3/60 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 13, 1979Term endedFeb 13, 1996

Sources & verification

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