Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle portion, and a sack or bag manufactured in accordance with said method
CA 2083499 A1 · Owner: Juergens, Werner · Inventors: Baar-Bartelt, Reinhold; Achelpohl, Fritz; Juergens, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The present invention refers to a method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle piece, and to sacks or bags manufactured according to said method. For the solution of the object to simplify already known methods at one end of a tube, section with side gussets (62) two parallelly pregrooved fold, lines (64 66) extending vertically to the side edges are formed. Then the bottom is pulled open and corner tucks (68) are formed thereby. A rectangular bottom cover sheet (70) onto which a U-shaped folded sheet and reinforcements (74 76), are bonded by an adhesive, is pasted thereon. After the application of the glue pattern …
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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 March 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2014.
- 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.