Glass panel
CA 2449207 A1 · Owner: Nippon Sheet Glass Co. Ltd. · Inventors: Ng, Nelson; Collins, Richard Edward; Minaai, Tetsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A glass panel, wherein a pair of plate glasses (1) and (2) are disposed opposedly to each other through a clearance part (V) the peripheral edge , parts of both plate glasses (1) and (2) are connected to each other through low melting point glass (4) to seal the clearance (V) and the adjacent , surface (4a) of the low melting point glass (4) adjacent to the clearance part (V) is swelled to the clearance part (V) side at the center of the low melting point glass between both plate glasses (1) and (2) in the cross section of both plate glasses (1) and (2) generally perpendicular to the surfaces thereof.
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 July 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2024.
- 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.