High surface area permeable membrane
CA 1107923 A · Owner: Research Corporation · Inventors: White, Eugene W.; White, Rodney A.; Hanusiak, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for preparing three-dimensional structures providing a plurality of separate interpenetrating three-dimensional domains or channels or flowpaths each of, said domains or channels or flowpaths being a closed system of connected porosity or permeability and each of said domains or channels or flowpaths being interpenetrating within said structure. These structures are prepared from porous permeable precursor materials having a single three-dimensional domain or channel or flowpath as described above. Suitable precursor materials are provided by the abundant porous carbonate skeletal material of marine life e.g. the coral Porites skeletal aragonite. For example by, coating the …
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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 1998.
- 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.