Improved method and system for collecting and handling dust in a papermachine environment
CA 2333397 C · Owner: Ponka, Philip · Inventors: Wicklund, Peter Kevin; Ponka, Philip; Klymenko, Jerry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process and system (22) for collecting and handling dust in a papermaking machine environment (20) wherein dust-laden air is drawn into and moves along an elongated collector (38 or 40) by way of a vacuum-generating source (42) connected to the collector involves the introduction of water into the collector so that the introduced water becomes entrained by the dust-laden air moving through the collector and wet-scrubs the dust-laden air upon entering the collector. With the dust being wet-scrubbed upon exiting the collector the, likelihood of ductwork fouling is substantially eliminated and the risk of fire in the ductwork downstream of the collector is appreciably reduced.
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 April 6, 2000 and granted November 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 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.