Dumped packings and apparatus comprising such dumped packings
CA 1104920 A · Owner: Citten Limited · Inventors: Priestley, Ronald; Ellis, Stephen R.M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to dumped packing for use in gas/liquid contact apparatus. The dumped packings consist of a plurality of packing elements. Each element has a polygonal or arcuate base with a generally convex outer surface and a generally concave inner surface which extend about an axis to an extent of 90 to 270°. In section in a radial plane including the axis each element has the shape of a trough which trough has a length, to depth ratio of greater than 6 and/or a length to width ratio of at least three. In addition the trough has one or more apertures. The dumped packing according to the invention has a low resistance to gas or vapour flow therethrough.
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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 July 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.