Reinforced optical fiber and method of manufacture
CA 2085849 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Endo, Satoshi; Seike, Takeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fiber reinforcing structure and method of manufacture thereof for reinforcing an optical fiber having a cladding portion of its core removed to expose a bare fiber portion. The optical fiber core with the bare fiber portion is placed in a longitudinal groove of a reinforcing member. The optical fiber core is fixed to the reinforcing member at the ends of the longitudinal groove using an adhesive. A cover is then fixed to the reinforcing member to hermetically seal the optical fiber core within the longitudinal groove. The reinforcing structure of the present invention prevents environmental conditions from adversely affecting the optical characteristics of the optical fiber.
Read the whole patent
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
- Filed December 18, 1992 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2014.
- 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.