Sheet materials for solid phase extractions and solid phase reactions
CA 2177983 A1 · Owner: Fung, Simon S. · Inventors: Hansen, Paul E.; Hagen, Donald F.; Fung, Simon S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sheet article for solid phase extraction or solid phase reaction comprises at least ore sorptive polymer pulp and optionally at least, one of sorptive and reactive particulate. The article can be used in a method of separating an analyte from a fluid comprising the step of passing a fluid comprising an analyte through a sheet article comprising poly(p- or m-phenylenephthalamide) pulp the pulp optionally, having incorporated therein solid phase particulates the sheet article being capable of isolating the analyte from the fluid.
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 December 8, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2016.
- 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.