Method and apparatus for manufacturing coated flat glass
CA 2002495 A1 · Owner: Hofer, Peter H. · Inventors: Hofer, Peter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and apparatus for manufacturing coated flat glass which includes delivering glass at a controlled rate to a molten metal bath; advancing the glass along the surface of the bath under thermal conditions assuring that a ribbon of glass having an upwardly facing surface is established on the bath; allowing the coated ribbon of glass to sufficiently cool to permit it to be taken undamaged out of the bath; advancing the coated ribbon through an immediately adjacent controlled atmosphere chamber; and applying at least one coating to the upwardly facing surface of the ribbon of glass within the controlled atmosphere chamber.
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 8, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 8, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2011.
- 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.