Fluid energy conversion apparatus
CA 2097300 C · Owner: Nozu, Rikurou · Inventors: Nozu, Rikurou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid energy conversion apparatus including a fluid path assembly having an outside guide assembly a, cylindrical wall inside surface and at least one inside guide assembly is provided. There is also a cylindrical partition wall which extends between the outside guide assembly and the inside guide assembly with its central axis set on the central axis of the cylindrical wall inside surface the cylindrical, wall inside surface of the outside guide assembly and the cylindrical partition wall defining an annular outside path therebetween and the outside peripheral surface of the inside guide assembly and the cylindrical partition wall defining an annular inside path therebetween. There is a …
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 21, 1992 and granted May 19, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 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.