Viscous fluid type heat generator with variable heat-generating performance
CA 2199693 C · Owner: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho · Inventors: Ban, Takashi; Takenaka, Kenji; Mori, Hidefumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A variable heat-generating performance viscous fluid type heat generator having a heating chamber in which an electrorheological fluid is confined to generate heat upon being subjected to a shearing action by the rotation of a rotor element within the heating chamber a heat receiving, chamber arranged adjacent to the heating chamber and permitting a heat exchanging liquid to receive heat from the electrorheological fluid and to circulate through the heat receiving chamber and an external heating circuit and a, controllable electricity conducting unit adjustably conducting electricity through the electrorheological fluid so as to adjustably change the viscosity of the electrorheological …
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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 March 11, 1997 and granted August 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 2019.
- 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.