Steam purity monitor
CA 2074663 C · Owner: Westinghouse Electric Corporation · Inventors: Bellows, James Christopher
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A steam purity monitor (10) detects the presence of sodium hydroxide and sodium chloride in a steam turbine (12). In the steam purity monitor (10), a control unit (18) is connected to a sensor unit (14) in the steam turbine (12) which has a conductance sensor (30), pressure sensor (34) and temperature sensor (32) to measure conductance pressure and temperature in the steam turbine (12). A heating coil (40) is further provided to vary the temperature of the sensor unit (14). If conductance is detected by the conductance sensor (30) then the, temperature is obtained from the temperature sensor (32) and compared by the control unit (18) to a saturation temperature calculated based on pressure …
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 24, 1992 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.