Method and apparatus for controlling the heat transfer of liquid coolant in continuous casting
CA 2018016 C · Owner: Yu, Ho · Inventors: Yu, Ho
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for continuously controlling the heat exchange capacity of a liquid-gas mixture which is a liquid containing gas bubbles or a gas containing droplets of liquid, said method comprising the steps of: detecting the relative density of said bubbles or droplets: comparing said relative density to a reference density range; and varying the amount of gas in said liquid so that said relative density is within said reference range.
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 May 31, 1990 and granted January 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2012.
- 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.