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Expired Canadian patentCanada

Tamper resistant cap

CA 1305099 C · Owner: Kardon Industries, Inc. · Inventors: Zinnbauer, Gerald

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 novel tamper-evident closure assembly for a container such as a bottle, which can incorporate one or more tamper indicators that are severed from the closure assembly when the cap is removed. The tamper indicator can be shaped as a disk or any other distinct shape, such as in the form of a proprietary mark. Additionally a proprietary mark, such as a trademark can be, placed on the visible surface of the tamper indicator.

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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 17, 1987
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1305099 C
Classification (IPC)B65D41/34 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 17, 1987Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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