Composite building panel
CA 1257066 A · Owner: Hitchins, William G. · Inventors: Hitchins, William G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite building panel comprising a parallel and spaced-apart pair of substantially rigid side members; at least one pair of substantially rigid transverse members disposed between said side members at or adjacent, respective ends thereof and normal thereto; a body portion of foamed plastic material accommodated within the area defined by said side and transverse members; a cladding panel overlying each face of said body portion; and a pair of bracing members, of thin cross-section and high tensile strength disposed, between at least one of said cladding panels and said body portion; said bracing members extending between diagonally-opposed corners defined by said side and transverse …
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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
- Granted July 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 11, 2006.
- 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.