Removal device for electrostatic precipitators
CA 2136934 A1 · Owner: Chang, Chin-Chu · Inventors: Chang, Chin-Chu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A removal device for an electrostatic precipitator which includes an ion generator, precipitator collector, and removal device for removing particles in the precipitator. A plurality of scrapers capable of linear displacement between two adjacent electrostatic plates of opposite polarities remove particles adhered thereto and scraped particles are collected in the collector for subsequent handling.
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 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2016.
- 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.