Method and apparatus for precast and framed block element construction
CA 2507005 A1 · Owner: Powell, David W. · Inventors: Powell, David W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Precast planar construction blocks (10) are cast on-site or received and assembled in free-standing modules. A variety of shapes of spaced apart paired blocks form free-standing modules which apply building load over a large footprint. Biaxial sleeve connectors (100) and threaded rods facilitate connection between blocks. The free-standing modules are connected with other structural elements to form a complete primary structure. The primary structure can then be enclosed using manufactured blocks to establish perimeter walls and roofs.
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 October 8, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.