Filament separation in liquids
CA 1315941 C · Owner: Prosyma Research Limited · Inventors: Bush, Stephen F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of separating filaments from a clump thereof in a liquid flow from each other comprises sub-dividing the flow across its lateral extent to pass through an array of a plurality of filament separating channels having a, cross-section at least large enough to accommodate the cross section of the clumps such that flow along the channels imparts a shearing force to filaments at the edge of the flow in the channel to separate these axially from each other and from filaments at the centre of the clump. The liquid may be a polymer melt obtained by melting polymer granules containing lengths of yarn or tow and the method used to separate the individual filaments from the yarn or tow prior …
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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 April 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 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.