Rotor for heat generators and its manufacturing method
CA 2273693 C · Owner: Mori, Hidefumi · Inventors: Hirose, Tatsuya; Suzuki, Shigeru; Mori, Hidefumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a rotor assembly of a heat generator. The rotor assembly includes an inner rotor and an outer rotor that is rotated integrally with the inner rotor. The producing method includes forming the inner rotor from iron or iron alloy, and casting the outer rotor around the inner rotor by aluminum or aluminum alloy so that the outer rotor is firmly fixed to the inner rotor without slippage when heated.
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 June 3, 1999 and granted December 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 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.
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.