Building block or panel
CA 2383065 A1 · Owner: Corporaal, Hendrik · Inventors: Corporaal, Hendrik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A building block or panel having a shape of a parallelepiped comprising four edge faces (11, 13, 15 and 17) and two opposed major faces (19 and 21) said , edge faces being formed to be interlockingly engageable with the edge faces of similar building blocks, each edge face comprising lateral zones which are located to one or the other side of the central longitudinal axis of the edge face, one zone of each edge face being formed with a recess (23) and the other zone of each edge face being of a complementary configuration to the one zone the recesses on opposed edge faces being of corresponding configuration.
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 September 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 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.