Method and apparatus for reflow metallic surfaces
CA 2253889 A1 · Owner: L'Air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'Etude Et L'Exploitation Des Procedes Georges Claude · Inventors: Verbockhaven, Denis; Rabia, Stephane; Conor, Gilles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for dry cleaning or dry fluxing metallic surfaces before, during, or after a reflow soldering operation. The metallic surfaces that are dry cleaned or dry fluxed include (1) the metallic substrate on which an at least partially metallic, electronic component is to be mounted (2) the solder paste, and (3), the metallic portions of the electronic component. The method comprises treating the metallic surface with a gaseous treatment atmosphere comprising unstable or excited gaseous species, and is substantially free of electrically charged species.
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 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 10, 2020.
- 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.