A method of suppressing convection in a fluid in a cylindrical vessel
CA 2210033 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Fujiwara, Shinsuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An object of the present invention is to provide a method of suppressing convection of a fluid in a cylindrical vessel by means of realizing an environment under micro gravity which can be maintained for such a long time that growth of a large-sized crystal be economically effected. The feature of the present invention consists in a method of suppressing occurrence of natural convection of a fluid in a cylindrical vessel when, a density gradient due to difference in temperature concentration or partial, pressure is added to the gas or liquid filled in the cylindrical vessel along the central axis of the vessel, characterized by maintaining horizontal the vessel and rotating it around the …
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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 July 10, 1997 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 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
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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.