Method of manufacturing an optical fibre having a protective coating
CA 1297296 C · Owner: Plasma Optical Fibre B.V. · Inventors: Jochem, Cornelis M.G.; Van Der Ligt, Jacobus W. C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN 11 139 16 31.10.1985, ABSTRACT:, "Method of manufacturing an optical fibre with a protective coating", A method of a device for manufacturing an optical fibre with a protective coating is described in which a device for cooling the fibre after drawing from the preform is used. The cooling device comprises in principle a forcedcooled double-walled tube (2). In the space enclosed by the inner tube (2B) through which the fibre to be cooled is passed, a gas is present which has good heat-transporting properties, for example, helium supplied via an inlet tube (3). Cooling of the fibre takes place by heat dissipation via the helium to the forced-cooled tube wall. Said tube wall (2B) is cooled …
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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.