Acid gas scrubbing by composite solvent-swollen membranes
CA 1312428 C · Owner: Lee, Eric K.L. · Inventors: Kelly, Donald J.; Friesen, Dwayne T.; Lee, Eric K.L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite immobilized liquid membrane suitable for acid gas scrubbing is disclosed the, membrane comprising a solvent-swollen polymer and a microporous polymeric support, the solvent comprising at least one solvent selected from a class of solvents comprising those solvents with a highly polar group in the molecular structure of the solvent said highly, polar group containing at least one atom selected from nitrogen, oxygen, phosphorous and sulfur said solvents, having a boiling point of at least 100°C and a solubility parameter of from about 7.5 to about 13.5 (cal/cm3-atm)1/2. Said solvents are homogeneously distributed through the solvent-swollen polymer from 20% to 95% by weight. Also …
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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
- Granted January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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.