A method and apparatus for treating marine growth on a surface
CA 2548946 C · Owner: Johnson, Keith · Inventors: Johnson, Keith; Johnson, Timothy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus for treating of marine growth on the surface, such arm the holes of boats and ships. A confinement arrangement is used to confine a volume of heated fluid against the surface. The confinement arrangement is retained d against the surface by maintenance and mounts rollers so that it can be moved over the surface to treat other parts of the surface. A heated fluid is provided to the confined volume from an external heater.
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 November 26, 2004 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 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.
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.