Glass panel
CA 2290407 A1 · Owner: Yoshizawa, Hideo · Inventors: Yoshizawa, Hideo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A glass panel, wherein spacers (S1) are interposed between first flat glass (1A) and second flat glass (1B), a sealing part (2) is provided on the entire outer peripheral edges of the first and second flat glass (1A 1B) and a space , between the first flat glass (1A) and the second flat glass (1B) is vacuumsealed, spacers (S1) providing an excellent heat insulating performance breakage resisting feature and transparency to the glass panel being disposed along the sheet surfaces of the first flat glass (1A) and the second flat glass (1B).
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 March 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2021.
- 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.