Hockey stick
CA 2086470 C · Owner: Composites-Busch & Cie · Inventors: Lallemand, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The hockey stick comprises a shaft, a blade and a heel forming the connection between the blade and the shaft. It comprises a core having several parts (11 12, 13), each part, being made from synthetic foam having a different density to that of the other parts, based on different materials in, order to adapt the resistance and the characteristics of each part to the particular local stresses of the stick. The core is covered with three layers of woven materials (1 2, 3).
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 30, 1992 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 30, 2014.
- 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.