Spacer element for handling fluids
CA 2013473 C · Owner: Dt Membranfilter Vertriebs Gmbh · Inventors: Mohn, Jurgen; Heine, Wilhelm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spacer element for guiding flowing medium especially for apparatus for separating the medium by reverse osmosis and ultrafiltration with a, respective filter element being accommodated between each two essentially plate-like spacer elements about which the medium flows. The spacer element comprises a plate member having a rim region in which is provided at least one passage for the flowing medium, with the plate member having two oppositely disposed plate-like surfaces on at least, one of which are disposed a plurality of raised bosses that project from the surface, with the filter element resting on the bosses, whereby the filter element is in the form of a diaphragm pad with the medium …
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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 March 30, 1990 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 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.