Method of forming glass seal
CA 1202784 A · Owner: Emerson Electric Co. · Inventors: Bowsky, Benjamin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the process of making a direct glass seal to stainless steel containing chromium, the steel having been annealed in a reducing atmosphere, a chromium-depleted layer of the surface of the steel is removed to expose core material containing sufficient chromium to produce a chromium oxide film, a chromium oxide film is formed and glass is bonded to the metal along the chromium oxide film. -2-
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
- Granted April 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 2003.
- 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.