Hydrogen hydride keel
CA 2132239 C · Owner: Rendina, David D. · Inventors: Rendina, David D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fixed ballast containment unit connected with a ship comprised of an outer keel shell (16) within which a number of metal hydride containers (18) are supported by internal braces (17) in a manner which provides passages around the metal hydride containers (18) through which a number of heat intermediums may be induced to flow, so that the reactive properties of hydrogen with metal hydrides can be applied to various ships systems, while the mass of the ballast containment unit provides an inertial force to counteract external forces acting on the ship.
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 September 16, 1994 and granted July 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2016.
- 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.