Cross-slot microwave antenna
CA 2102479 A1 · Owner: Hughes Missile Systems Company · Inventors: Park, Pyong K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave antenna (20) comprises a, stripline microwave element including an outer conductor (36) having a radiating face (22) and an oppositely disposed backing face (30), an inner linear conductor (28) lying parallel to the radiating face within the outer conductor (36) and, a dielectric between the outer conductor (36) and the linear conductor (28). There is a pair of slots (24, 26) in the radiating face of the outer conductor (22), the pair of slots (24, 26) being oriented at 90 degrees to each other and being of unequal length. The inner linear conductor (28) is oriented such that it is not parallel to either of the slots (24, 26). A dielectric (33) resides between the outer …
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 4, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2015.
- 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.