Laminated glass structure
CA 2006179 A1 · Owner: Ando, Eiichi · Inventors: Osada, Koichi; Hirano, Akira; Ando, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laminated glass structure comprises two glass sheets, a plastic layer arranged at the bonding surface of one of the glass sheets, and a functioning layer consisting of single- or multi-layered films provided on the bonding surface of the glass sheet to the platic layer, wherein the functioning layer has a film having an energy gap of 4 electron volts or higher which is in contact with the plastic layer.
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 December 20, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 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.