Structure cleaning method and anticorrosion method, and structure using them
CA 2446109 C · Owner: Central Research Institute Of Electric Power Industry · Inventors: Takamasa, Tomoji; Okamoto, Koji; Furuya, Masahiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cleaning method for removing deposition such as scale adhering to the surface of a structure and a structure using this are disclosed. A surface layer that contains a radiocatalyst (5) is provided on the surface of a structure (1). A contaminating substance adhered on said surface layer is decomposed, and/or adhesion of a contaminating substance onto said surface layer is inhibited by irradiating said surface with radiation. A structure corrosion prevention method is also disclosed. A surface layer that contains a radiocatalyst is provided on the surface of a structure, the corrosion potential of said surface being decreased by irradiating said surface with radiation.
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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 April 26, 2002 and granted May 10, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2024.
- 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.