Hull coverings
CA 2457031 A1 · Owner: Kelly, James William · Inventors: Kelly, James William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A product (1, 5) for the treatment of an area of an article residing underwater. The product (1, 5) comprises a plurality of shapes (3 7) formed , from copper or a copper nickel alloy and a carrier film (2 6). The product , (1, 5) is adapted in use to be secured to the area of the article residing underwater such that the shapes (3, 7) contact or substantially contact each other. The shapes (3, 7) can be releasably secured to the carrier film (2 6) , or permanently secured to the carrier film (2 6). Suitable methods of , applying the product (1 5) to the area of the article are also disclosed.
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 29, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 29, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 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.