Soda-lime glass manufacture
CA 1090578 A · Owner: The Dow Chemical Company · Inventors: Lovett, Joe B.; Dickerson, James H. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention pertains to improvements in the manufacture of soda-lime glass from pelletized glass batch material in which a major portion of the alkali metal oxide flux material (e.g. Na20) in the final glass is derived from an alkali metal hydroxide (e.g. NaOH) and in which the alkali metal hydroxide is reacted with alkaline earth metal oxide source material (e.g. limestone) during the preparation of the pelletized glass batch material. The improvements are obtained by reacting aqueous concentrated alkali metal hydroxide with at least a portion of the alkaline earth metal oxide source material to form an aqueous slurry which contains the reaction products, then mixing with the slurry the …
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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 December 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 1997.
- 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.