Micro-effluent process for rinsing water and equipment for the same in industrial processing
CA 2058245 A1 · Owner: Ge, Ailan · Inventors: Hu, Dezong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a micro-effluent process for rinsing water and equipment for the same in industrial processing especially in, electroplating processing The process of the present invention is characterized in that periodically tank-turning over that is, at definite, time intervals, the rinsing solution is transferred from the first rinse tank to a high-level storage tank or to a working-tank (plating-tank), from the second rinse tank to the first rinse tank and so on and so forth, at last from the last rinse tank to its preceding tank, and the empty last rinse tank is filled up by clean water with a flow rate of less than 400 l/h or filled up with clean, water periodically at a …
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 December 20, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2013.
- 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.