Broadband directional coupler using cables
CA 2086060 C · Owner: Cmc Electronics Miltary Communications Inc. · Inventors: Monti, Osvaldo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A broadband directional coupler and method of constructing same is disclosed. The coupler is formed from a first and second coaxial cable each of which has an inner conductor surrounded by an insulating material and an outer conductive shielding sleeve about the insulating material. An elongated opening is formed in the outer conductive shield sleeve axially along a predetermined length of the cable. The insulating material in the elongated openings is formed with mating surfaces extending substantially parallel to the inner conductor along a predetermined length. The first and second coaxial cables are connected together along a predetermined length of the mating surfaces with the surfaces …
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 22, 1992 and granted April 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 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.