Papermaking elastic belt
CA 2431414 A1 · Owner: Hikida, Takahisa · 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 papermaking capable of preventing an occurred crack from developing to the inside thereof and increasing the durability thereof comprising a , reinforcement base material (6) buried in an elastic material the elastic , material further comprising a front surface layer (7) a rear surface layer , (8), and an intermediate layer (9) positioned between the front surface layer (7) and the rear surface layer (8), the intermediate layer (9) further comprising thick wall parts (12) disposed along the running direction of the belt and having a thickness in a belt thick direction wherein the thick wall , parts (12) may be exposed to the surface of the belt through the surface layer …
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 November 22, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 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.