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Expired Canadian patentCanada

Cleaning articles comprising a cellulosic fibrous structure having discrete low basis weight regions and an inverse emulsion

CA 2295743 C · Owner: Barnholtz, Steven Lee · Inventors: Cabell, David William; Nissing, Nicholas James; Barnholtz, Steven Lee

CIPO record

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Abstract From the Canadian patent

Disclosed are articles useful in cleansing and particularly wet-like , cleansing wipes which are dry until used, where fluid is released from the article. These articles comprise: a) a carrier comprising a cellulosic fibrous structure having at least a first region of relatively high basis weight that comprises an essentially continuous network and a second region of a plurality of mutually discrete regions of relatively low basis weight which are circumscribed by the high basis weight first region; and b) an emulsion applied to the carrier, where the emulsion provides fluid for cleaning when shear forces are applied to the article. The first and second regions of the cellulosic …

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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

  • Filed July 1, 1998 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 1, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 2020.
  • 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 1, 1998
GrantedApril 22, 2003
Term endedJuly 1, 2018
Patent numberCA 2295743 C
Classification (IPC)C11D17/04 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJuly 1, 1998Patent grantedApril 22, 2003Term endedJuly 1, 2018

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