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Expired Canadian patentCanada

Folding box for the accommodation of plastic bags wound into a roll

CA 1236060 A · Owner: Melitta-Werke Bentz & Sohn · Inventors: Zulauf, Wolfgang

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 folding box for the accommodation of a roll of wound plastic bags is provided with a closing flap which completely overlaps the front wall of the box. In the lower part a closing flap is glued firmly to the front wall. In the central part the closing flap is separable by means of a tear-off strip, so that the area connected to the lower part of the front wall may be separated from the upper part the upper part of the closing flap remaining attached to the cover of the box. The upper part of the closing flap may be inserted between two retaining flaps on the front wall. The area remaining after the tear-off strip has been removed forms an aperture for the withdrawal of plastic bags a …

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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 May 3, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2005.
  • 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 14, 1983
GrantedMay 3, 1988
Term endedMay 3, 2005
Patent numberCA 1236060 A
Classification (IPC)B65D5/54 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedNov 14, 1983Patent grantedMay 3, 1988Term endedMay 3, 2005

Sources & verification

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