Fold protection for spiral filtration modules utilizing uv cured adhesive and method of providing same
CA 2506889 A1 · Owner: Koch Membrane Systems, Inc. · Inventors: Cheng, Haitao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention encompasses a leaf packet (16) useful in forming a spiral filtration module, wherein the fold area of the leaf packet (16) is reinforced with a UV cured adhesive (18). The invention further encompasses a spiral filtration module wherein the fold line side seams (28) and/or axial , seams (30) of the membranes (10) utilized in the module are reinforced with a UV curable adhesive (18). The present invention further encompasses the method for making such leaf packet (16) and spiral filtration modules.
Read the whole patent
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 November 4, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2025.
- 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.