High temperature plasma gun assembly
CA 2134891 C · Owner: Sulzer Metco Ag · Inventors: Muehlberger, Stephan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plasma gun assembly (12) for use in high temperature environments couples electrode and cooling water supplying hoses (30 and 32) to a plasma gun (18) via an, extension arrangement having a conductive cathode extension tube (32) coaxially , disposed within a conductive anode extension tube (48). The cooling water flows through, the hallow interior of the cathode extension tube (72) to the plasma gun (18) then , returns from the plasma gun via a passage formed between the outside of the cathode , extension tube (72) and the interior wall of the anode extension tube (48). In this manner, the anode and cathode extension tubes are cooled as well as the plasma gun. Powder, and plasma gas …
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 11, 1993 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2015.
- 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.