Device for delivering charged powder for deposition
CA 2413015 A1 · Owner: Keller, David · Inventors: Murari, Ramaswamy; Chrai, Suggy S.; Santonastoso, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a re-circulating particle feed apparatus (10) comprising: a circular conduit (11) suitable for circulating gas suspended particulates; a deposition station (17) comprising an opening onto the conduit into which an electrostatic chuck fits, with a deposition surface of the chuck (9) fits and , a propulsion device (12) for maintaining gas and particle circulation through the conduit (11), wherein the device (12) is adapted to maintain circulation at a rate that brings a deposition effective amount of particles within a range of electro-attractive influence at the deposition station (17).
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 11, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 2023.
- 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.