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Expired Canadian patentCanada

Absorbent pad for toxic spills

CA 1296170 C · Owner: Wyant, James A. · Inventors: Wyant, James A.

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 liquid collecting system for use in controlling toxic liquid leaks and disposing of the collected leaked liquid. The system has an absorbent pad which can be placed under the leak. The pad includes an absorbent blanket treated with material that gelatinizes the collected liquid, a liquid impermeable shell holds the blanket and a liquid permeable cover retains the blanket in the shell. The system includes a liquid impermeable storage bag for the absorbent pad.

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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 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 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.
FiledNovember 10, 1988
GrantedFebruary 25, 1992
Term endedFebruary 25, 2009
Patent numberCA 1296170 C
Classification (IPC)A61F13/15 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedNov 10, 1988Patent grantedFeb 25, 1992Term endedFeb 25, 2009

Sources & verification

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