Press belts and shoe press device using the belts
CA 2481472 A1 · Owner: Hikida, Takahisa · Inventors: Hikida, Takahisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Press belts (11; 21; 31; 41; 51; 61; 71; 81) used for press-treating a bandshaped material and a shoe press device using the belts the press belts , endlessly formed of an elastic material characterized in that a thickness gradually decreases starting at pressurizing area center parts (C1; C2; C3; C4; C5; C6; C7) toward pressurizing area end parts (A1 A1'; A2, A2'; A3, A3'; , A4, A4'; A5, A5'; A6 A6'; A7, A7'); the shoe press device comprising at least the press belts, a pressurizing shoe (82) for applying a pressure to the press belts, and a pressure regulating means (83) for regulating the pressure of the pressurizing shoe, whereby a uniform pressure can be applied to the band-like …
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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 April 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 2025.
- 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.