Crankcase, compressor, turbine and combustion turbine engine comprising said crankcase
CA 2444982 C · Owner: Mons, Claude · Inventors: Mons, Claude; Le Biez, Philippe; Lebret, Yann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The casing (28) of the invention is of the type supporting series of stationary blades having disposed between them series of blades that are movable (22) in rotation about a longitudinal axis. In characteristic manner said casing (28) comprises a main element and at least facing one of the series of moving blades (22) an assembly comprising a plate made of a honeycomb material and a covering disposed on the face of the plate facing away from the blades so that said cells are open towards the blades said covering being provided with holes that open out into cells of the plate thereby forming open cells, said covering closing other cells of the plate thereby forming closed cells, a cavity …
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 16, 2003 and granted August 30, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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.