Anti-telescoping device for spiral wound membrane modules
CA 2229510 C · Owner: Tortosa, Pedro J. · Inventors: Tortosa, Pedro J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Longitudinal extension and consequent destruction of spirally wound membrane modules arranged in paired axial alignment within a pressure vessel of an ultrafiltration unit are prevented by a pair of end-cap anti-telescoping devices (ATD's) and a central ATD. The central ATD (120) is an integral assembly of a perforated circular steel plate (112) and a solid interconnector (126) that is concentrically disposed at its hub section (123) with tubular ends protruding on each side of the plate and having an outer peripheral groove for an o-ring (129) near each end for sealingly engaging the ends of a pair of membrane modules. Londitudinal extension of the spirally wound membranes is …
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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 July 9, 1996 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2018.
- 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.