Formwork for creating columns and curved walls
CA 2299193 A1 · Owner: Piccone, Francesco · Inventors: Piccone, Francesco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A formwork system for casting curved concrete walls comprises a curved wall element having a curved wall portion and connectors at each longitudinal edge of the, curved wall portion. Resistance to bending in the vertical plane of the formwork is, provided by connector elements extending radially inward from the curved wall elements. The connector elements also act to retain together edge adjacent curved, wall elements.
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 February 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 23, 2022.
- 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.