Method of connecting a gripping device to sheet of web-formed packing material
CA 2005684 C · Owner: Ab Profor · Inventors: Lilja, Stig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the manufacture of single-use disposable packages or cartons for, for example, milk or juice, a web or sheet-formed packaging material is normally reformed by folding and sealing processes into individual packages. The material may possibly also be caused to pass through a bath of chemical sterilization agent. As a result of the forming and sterilization processes it is impossible to provide, the material beforehand with applied opening arrangements such as plastic pull-rings or the like. A method of connecting a gripping device (6) to sheet or webformed packaging material essentially comprises a first application and liquid-tight sealing of an anchorage device (4) in a hole (3) in the …
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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 December 15, 1989 and granted December 24, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 15, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.