Broadband coupler
CA 2190044 C · Owner: Ga-Tek Inc. (Doing Business As Gould Electronics Inc.) · Inventors: Campbell, Daniel R.; Weber, Pamela A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fused optical fiber coupler comprising a first pair of axially elongated cylindrical fibers, each having a circular transverse cross-section of a first diameter, the, first pair of fibers being in fused contact with each other along a continuous line and, forming grooves on opposite sides of the line. A second pair of axially elongated, cylindrical fibers each having a circular transverse cross-section of a second diameter, different than the first diameter of the first pair of fibers one fiber from , the second pair, of fibers being disposed in each of the grooves and fused to each of the first pair of, fibers.
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 November 12, 1996 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2018.
- 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.