Glass melting furnaces
CA 1207534 A · Owner: Owens Corning · Inventors: Hohman, Charles M.; Dunn, Charles S.; Propster, Mark A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed of melting glass in a melting furnace in which a pool of molten glass is confined above a furnace bottom wall and a layer of unmelted particulate glass batch is deposited on the surface of the pool. Heating electrodes are immersed in the pool of molten glass and located at a vertically medial portion of said pool. The method includes heating the pool of molten glass by the electrodes to form an isothermal layer of molten glass circulating heated molten glass upwardly from the electrode location to melt the batch layer, and returning most of the glass back to the electrode location for reheating while flowing a portion of the glass downwardly beyond the electrode …
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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
- Granted July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 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.