A power generation system
CA 2279052 C · Owner: Kajiwara, Hidefumi · Inventors: Takahashi, Shintaro; Watanabe, Yasuo; Kaneko, Ryoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A combined power generation system that includes a generator driven by both a steam turbine and a gas turbine. The steam turbine includes a rotor provided with a mono-block rotor shaft, multi-stage blades fixed on the mono-block rotor shaft from a high pressure side to a low pressure side. Final stage blades (e.g. made from Ti-based alloy) are provided at the low pressure side where, ideally, the final stage blades have a length not less than 40 inches (at 3000 rpm shaft rotation) or 33.5 inches (at 3600 rpm). The gas turbine includes movable turbine blades (e.g. made from Ni-based cast alloy).
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 February 1, 1990 and granted November 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2012.
- 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.