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Expired Canadian patentCanada

Carrier stock with band segments extending between opposite edges

CA 2040175 C · Owner: Weaver, William N. · Inventors: Marco, Leslie S.; Weaver, William N.; Klygis, Mindaugas Julius

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

Carrier stock formed from a single sheet of resilient polymeric material, such as low density polyethylene, for machine application to substantially identical containers. The stock is severable along, transverse lines that are perforated to form individual, carriers with container-receiving apertures and additional apertures, as defined by band segments and, with integral handles. The additional apertures facilitate reconfiguration of the stock from an asformed configuration to an application configuration. Band segments defining the container-receiving apertures at each end rank at each end rank at each edge row include an outer cross segment, an outer edge segment an inner cross segment, …

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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 April 10, 1991 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1991
GrantedJanuary 14, 1997
Term endedApril 10, 2011
Patent numberCA 2040175 C
Classification (IPC)B65D71/02 +1 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedApril 10, 1991Patent grantedJan 14, 1997Term endedApril 10, 2011

Sources & verification

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