Coated optical fiber, fabrication process thereof and fabrication apparatus thereof
CA 1269260 C · Owner: Yamakawa, Shinzo · Inventors: Wagatsuma, Makoto; Yamamoto, Fumio; Shuto, Yoshito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coated optical fiber comprising an optical fiber; a first layer of a thermoplastic rubber composition which is disposed around the circumference of the optical fiber, has a Young's modulus of 0.1 GPa or less and is, capable of extrusion coating; and a second layer of a thermoplastic resin composition which is disposed around the circumference of the first layer, has a linear expansion coefficient of 1 x 10-5°C-1 or less and a Young's modulus of 5 GPa or more, and is capable of extrusion coating. The optical fiber is coated simultaneously with the first and second layers immediately after the spinning of the optical fiber. An apparatus for fabricating the coated optical fiber has an …
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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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.