Method for plasma brazing
CA 2271740 A1 · Owner: Aga Aktiebolag · Inventors: Lindstrom, Johan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of brazing, with the use of a plasma forming device (1) having a nonconsumable electrode (2), comprises the following steps of operation. A first gas is supplied to said plasma forming device (1). A plasma flow is formed of said first gas by applying a voltage between said electrode (2) and an electrical terminal (7). The plasma flow is directed towards a work piece (7). Braze material (10) to be melted by said plasma flow is provided. Furthermore a second gas may be supplied for shielding said plasma flow from the surrounding atmosphere. At least one of said first and second gas comprises a principal inert component including at least argon and in a minor amount an active …
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 November 7, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 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
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.