Electrostatic fluidized bath with semiconductor electrode
CA 2192000 C · Owner: Blavette, Jean-Pierre · Inventors: Blavette, Jean-Pierre; Dressler, Peter; Tedoldi, Arnaud
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an electrostatic fluidized bath for coating substrates by means of powders which are charged electrostatically when contacting one or a plurality of semiconductor electrodes immersed in the fluidization vat. The semiconductor electrodes have a voluminal resistivity from 10<2> to 10<8> OMEGA .m and preferably from 10<4> to 10<6> OMEGA .m. The coating of the substrates in such baths is particularly regular and uniform regardless of the geometry of substrate to be coated and is appropriate for large size substrates.
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 June 8, 1995 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2017.
- 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.