Electrostatic fiber spinning from polymeric fluids
CA 1102980 A · Owner: Pulp And Paper Research Instittue Of Canada · Inventors: St. John Manley, Rockliffe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and apparatus are provided for producing a filament from molten rapidly crystallizing filament-forming thermoplastic polymers. The apparatus includes a chamber for the molten crystallizable polymer. Heating means are associated with the chamber for melting the polymer and for maintaining the polymer in a molten condition. An electrically conductive material is disposed at one end of the chamber the electrically conductive, member including an orifice formed therethrough. Controllable means are provided for applying a preselected controlled pressure to the molten polymer, the controlled pressure being sufficient to form a static flat meniscus of the molten polymer at the orifice but …
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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 June 16, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 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.