Irradiating resin-coated optical fiber through light-absorbing fluid material
CA 1306441 C · Owner: Tsuneishi, Katsuyuki · Inventors: Sugai, Masakatsu; Tsuneishi, Katsuyuki; Kameo, Yuji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract. The invention provides a method for producing an optical fiber having a surface coating of a UV-curable resin. The method comprises the following steps. An optical fiber is spun from a molten preform and a UV curable resin is applied to the surface of the fiber to form a resin coating. The coated fiber is passed through a container having UV transparent walls containing a gas for promoting the curing of the resin upon exposure to UV light. A layer of fluid material is provided outside the walls moving past the container at a predetermined flow rate. The fluid material contains at least two UV light-absorbing materials which have different absorbing wavelengths. The resin on 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 August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 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.