Method for protecting ships against fouling
CA 1089724 A · Owner: Rasmussen, Oystein · Inventors: Rasmussen, Oystein
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for Protecting Ships Against Fouling. Abstract of the Disclosure. To protect the underwater surfaces of a ship against fouling and corrosion, several layers of wax are applied, one layer on top of the next but each layer having a successively lower melting point and/or degree of hardness. After a certain length of time, when the outermost layer of the treated surface has become fouled or roughened in some way it is thus, possible to remove whichever layer is outermost by melting or brushing, since the treatment can be regulated such that the underlying layer(s) will not be affected.
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
- Granted November 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 1997.
- 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.