Transparent plastic film roof and building using the same
CA 2530158 A1 · Owner: Ishisaki, Yoshiaki · Inventors: Ishisaki, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A transparent resin film roof of a building formed in a bag shape by fixing two sheets of transparent resin films to edge rafters ranging from a ridge piece to a pole plate, characterized in that warm air is supplied from air supply ports to bag-like objects to maintain the bag-like objects in tensed state and the air in the bag-like objects is discharged from air discharge ports. A continuous ridge type building wherein a fluid passing pipe is , arranged near the root part of the continuous ridge type roof of the building in the same direction as that of long-film retainers between the two sheets of transparent resin films so that hot water or hot antifreezing fluid can be passed …
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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 2025.
- 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.