One-piece shell for a chair
CA 2004735 C · Owner: Vertex Composites Inc. · Inventors: Matte, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A one-piece molded seating shell for use in the construction of a chair. The shell is molded from composite polymeric materials, and comprises a seating portion and a back support portion interconnected therewith by a single, central, narrow intermediate integrally formed joint. At least the joint is provided with reinforcing fibers extending therein and permits the back support portion to flex rearwardly of its normal plane and in torsion.
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 December 6, 1989 and granted September 24, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2011.
- 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.