Primary source with frequency re-utilization
CA 1190317 A · Owner: Thomson Csf · Inventors: Bui-Hai, Nhu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A primary source for a space communications antenna requiring a higher mode coupler comprises more especially a horn with two types of evenly spaced alternate corrugations whose depth decreases, for each of the types from the neck, to the opening, followed by an orthomode junction of the quasi-optical filter type, followed by a higher mode coupler placed in series in the reception channel of the primary source.
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 July 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2002.
- 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.