Filler body with a cross channel structure
CA 2295410 C · Owner: Kessler, Alwin · Inventors: Kessler, Alwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The filler body (1) with a cross channel structure is provided for a packing column or a static mixer apparatus. It is built up of layers (10) which border on one another in which in each case channels (2) are arranged parallel to one another. Lateral channels (20) which are open to one another extend at boundary surfaces (3) between adjacent layers. These lateral channels form a cross-wise arrangement. At least a portion of the layers (10) in each case contain central channels (21) in addition to the lateral channels (20). A material separation at the boundaries between the central and the lateral channels is produced in about one half of the cases by regularly arranged wall sections; the …
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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 January 13, 2000 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 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.