Method and device for forming mineral wool by internal centrifuging
CA 2392338 C · Owner: Pierucci, Laurent · Inventors: Guyot, Daniel; Pierucci, Laurent; Decker, Pascal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a device for forming mineral fibres by internal centrifugation comprising a centrifuge (1) capable of rotating about an axis X¿1? in particular vertical and whereof the peripheral wall (2) is perforated with a plurality of orifices high-temperature gaseous drawing means in the form of an annular burner (9) pneumatic means for controlling/adjusting the dimensions of the fibres in the form of a blow ring (10). The control and adjusting of the dimensions carried out by said pneumatic means are completed by another means including a mechanical means comprising a cooled plate (12) arranged around the centrifuge (1) opposite its peripheral wall (2) at least. The invention …
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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 November 22, 2000 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
- 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.