Method of operating a gas recovery system and apparatus for employing the method
CA 1259902 A · Owner: Hoogovens Groep Bv · Inventors: Van Ditzhuijzen, Gustaaf A.J.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gas which is intermittently and/or, irregularly released e.g. carbon monoxide-containing gas from an oxygen steel converter, is collected in a gas holder and delivered from the gas holder to a user installation. To avoid wastage of gas when the average release of gas varies and to permit use of a smaller gas holder, the output rate from the gas holder is determined by deriving a modified filling level signal by filtering a filling level signal of the gas holder so as to attenuate frequencies in the filling level signal above a predetermined limit frequency by a factor of at least ten, and adjusting the rate of delivery of the gas from a gas holder in dependence on variations in said …
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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
- Granted September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.