Expired Canadian patentCanada
Jet engine booster structure
CA 2269889 C · Owner: Kawasaki Jukogyo Kabushiki Kaisha · Inventors: Sakai, Yusuke; Hashimoto, Keisuke; Suga, Shinya
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a booster structure capable of obtaining a desired pressure ratio with fewer stages. The moving blade of a booster 2 is a boundary layer control tandem moving blade 11.
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 April 26, 1999 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 26, 1999
GrantedNovember 19, 2002
Term endedApril 26, 2019
Patent numberCA 2269889 C
Classification (IPC)F02K5/00 +2 more
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.