A multilayer angular packing
CA 2028837 C · Owner: Wilhelm, Gerd · Inventors: Wilhelm, Gerd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A regular economically producible packing of use in chemical engineering equipment is described. Physico-chemical phenomena in thermal separating and mixing apparatus in particular are associated with contacts between different phases in cocurrent and countercurrent operation. The important feature of an appropriate packing design is to intensify transverse mixing in the flowing phases and to intensify contact between then. This purpose is served in the packing according to the invention not only by known fan-like vane elements but also by a number of channels rows which are parallel to one another of offset from one another the effect of, such rows being to boost transverse mixing and …
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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
- Filed February 9, 1990 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2012.
- 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.