Shoe press belt
CA 2443656 A1 · Owner: Watanabe, Atsuo · Inventors: Watanabe, Atsuo; Watanabe, Atsushi; Hikida, Takahisa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A belt for shoe press comprising a press roll (1) a belt (2), and a press , shoe (3) being employed in a paper making press for pressing a material web (5)in which a crack can be prevented from occurring and growing. The belt comprises a reinforcing layer (6), a first elastic material layer (7) and a , second elastic material layer (8) wherein multiple drainage trenches are made in the outer circumferential surface region of the first elastic material layer (7). Bottom of a drainage trench (9a) in a region (S3) close to the axial end part including at least one of a region (S2) close to the axial end part of the press shoe (3) or a region (S1) close to the axial end part of the press …
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 April 8, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2024.
- 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.