Method of producing glass materials from ash-slag waste
CA 2097507 A1 · Owner: Aktsionernoe Obschestvo "Sistemy Novykh Tekhnology" (Sinto Ltd.) · Inventors: Bayakin, Sergei Gennadievich; Shabanov, Vasily Filippovich; Anshits, Alexandr Georgievich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for obtaining glass materials from ash waste consists in heating the charge up to the melting point and melting it in a reducing medium, after which the obtained melt is cooled down through thermoshock up to obtaining the glass material. Before heating the charge, the carbon content in it is brought to 3.0 - 8.0 % by weight, and the structure of the glass material is formed in a controlled flow of a gas medium.
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 October 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2013.
- 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.