Vapor-liquid contacting apparatus
CA 1112556 A · Owner: Uop Inc. · Inventors: Mellbom, Marvin E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multipass fractionation tray having at least three chordal inlet and three chordal outlet downcomers alternately spaced along the circular periphery of the tray is presented. Liquid is collected from the contacting surfaces of the tray in a corresponding number of troughs which extend radially from approximately the center of the tray to the outlet downcomers. The troughs may serve as structural members which support the perforated decking plates of the tray and which are attached to a centrally located circular connecting ring.
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
- Granted November 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 1998.
- 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.