Cryogenic fluid system and method of pumping cryogenic fluid
CA 2224749 C · Owner: Gram, Anker · Inventors: Bonn, John W.; Gram, Anker
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for the delivery of cryogenic fluid more particularly a cryogenic fuel, such as for example, but not limited to an liquefied natural gas (LNG) to a cryogenic fluid using source, and more particularly an LNG fuel source and even more particularly an LNG fuel-operated engine. The system includes a source of a cryogenic fluid more particularly an underground tank and with a liquid level within the underground tank source. The system includes a delivery pump to deliver cryogenic fluid from the underground tank source to a cryogenic using source, typically an LNG fuel source above the underground tank source with the pump located below the liquid level of the cryogenic fluid …
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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 December 12, 1997 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2019.
- 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.