Optical cable manufacture
CA 1267527 C · Owner: Northern Telecom Limited · Inventors: Greveling, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A method and apparatus for manufacture of an optical cable having a plurality of optical fibers surrounded by a protective tube. The fibers are loosely contained within the protective tube which comprises longitudinally extending closely packed tensile filaments embedded in a continuous solidified and rigid carrier material. The carrier material is preferably a polystyrene a polyester or an epoxy based resin. A water blocking medium may fill the protective tube. The protective tube is made by covering the tensile filaments with the carrier material in a flowable state, guiding the coated filaments through a tubular space so as to fill it and causing solidification …
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
- Granted April 10, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.