Geothermal power generation
CA 2425480 A1 · Owner: Halff, Albert H. · Inventors: Halff, Albert H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A geothermal power generation system having an input well (1) extending from the surface (3) into a hot rock strata (4) and an output well (5) spaced away from an input well extending from the surface into the hot rock strata. The input and output wells extend into the hot rock strata. A horizontal bore (6) connects the two wells together. The bore is located in the hot rock strata and consists of a casing (8,9) alone or a casing and a backfill between the casing and the hole. Alternatively, the system may consist of only one vertical well and a horizontal bore extending into the hot rock strata and a pipe that returns the water into the horizontal bore.
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 July 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2023.
- 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.