Bag-producing apparatus and method of producing foil bags
CA 2273419 C · Owner: Kraft, Eberhard · Inventors: Kraft, Eberhard; Wild, Hans-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method of producing foil bags wherein at least two foils are supplied that serve as side foils of the foil bags the foils are connected to each other and then cut into individual foil bags wherein possibly existing differences in the amounts of foil materials provided by the at least two foils in the feed direction for a respective foil bag are eliminated by stretching the foil that provides the smaller amount of foil material for a foil bag and to a bag-producing apparatus for performing the method.
Read the whole patent
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 May 28, 1999 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2021.
- 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.