Method of folding and shaping sheet, and apparatus for folding and shaping sheet
CA 2254746 A1 · Owner: Yokoyama, Yoshimasa · Inventors: Yamamoto, Masahiro; Yokoyama, Yoshimasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of folding and shaping a sheet by which a sheet formed with a single or a plurality of mountain-shaped folds and a single or a plurality of valleyshaped folds, the first and second folds being parallel and alternate can be , rapidly and smoothly folded and shaped and an apparatus therefor. The method comprises the steps of supplying a sheet (1) in a naturally developed state onto a support guide (3), and applying a light pressing pressure on the sheet (1) in a direction, in which folds (10 11) are increased in bent angles, by , means of a pressing guide (6) which acts in a direction of moving toward and away from a support surface of the support guide (3) when a pair of …
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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 May 8, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2019.
- 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.