Building block; system and method for construction using same
CA 2104175 C · Owner: Tangum, Richard R. · Inventors: Blaney, Geoffrey W.; Tangum, Richard R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A building block, and a system and method for constructing a building envelope using a plurality of building blocks, roof panels, and trusses. Each building block may be pre-fabricated and stacked upon one another at the construction site. The blocks and roof system may be rigidly coupled together to form a building using a plurality of connecting lines placed through conduits within each building block. The connecting lines are tensioned to couple each building block to an adjacent block, foundation, and roof system of the building. Each building block . includes a core which is preferably insulating, and has a pair of opposing surfaces. A plurality of cross struts are placed through the …
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 August 16, 1993 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2015.
- 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.