System, method and material for making pneumatically filled packing cushions
CA 2397797 A1 · Owner: Fuss, Gunter G. · Inventors: Yampolsky, Vladamir; Fuss, Gunter G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
System, method and material for making pneumatically filled packing cushions in which a plastic film material (11) having two (12 13) superposed layers , joined together along first (16) and second (17) longitudinal edges is prefabricated at a first location by forming longitudinally spaced transversely extending rows of perforations (19) across it and sealing it together along seal lines (22, 23) which extend from the first edge (16) of the material in a direction generally parallel to the rows of perforations (19) and terminates at a short distance from the second edge (17) to form chambers (24) with open mouths (25) facing the second edge (17) between the rows of perforations …
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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 January 17, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2023.
- 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.