Patent Yard Sign in
Expired Canadian patentCanada

Turbine generator system and method

CA 2552227 C · Owner: Mcdonald, William J. · Inventors: Maurer, William C.; Mcdonald, William J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

In one embodiment, a wellbore power generation method includes causing a fluid to flow through a downhole turbine, and causing the turbine to rotate a generator (100). At least one of a turbine configuration and a flow rate of the fluid is selected to cause the downhole turbine to operate near its runaway speed, such that changes in load applied to the generator (100) do not substantially affect a rotation rate of the downhole turbine (111).

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 December 28, 2004 and granted May 6, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 28, 2004
GrantedMay 6, 2014
Term endedDecember 28, 2024
Patent numberCA 2552227 C
Classification (IPC)E21B41/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 28, 2004Patent grantedMay 6, 2014Term endedDec 28, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.