Circular or annular coating film forming method
CA 2379337 A1 · Owner: Yokoyama, Takuya · Inventors: Yokoyama, Takuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of forming a circular or annular coating film on a substrate (W) using a device of simple structure without using coating liquid wastefully comprising the steps of, using a painting device (A) formed of a rotatable table (1) suckingly holding the substrate (W) horizontally and a horizontally movable nozzle (10) liftable relative to the table (1) and having a delivery hole (10a) at the tip part thereof, rotating the table (1) and supplying coating liquid from the delivery hole (10a) in a linear state on to the substrate (W) while moving the nozzle (10) by a specified interval between the rotating center of the table (1) and an outward specified position in one direction with …
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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 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2022.
- 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.