Antenna system
CA 2287357 A1 · Owner: Olson, Steven C. · Inventors: Drew, David John; Olson, Steven C.; Stewart, Kerry R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an antenna system (10) that is particularly suited for use in mobile communication applications. The antenna system (10) includes both a transmit array (26) and a receive array (24) in a side by side configuration. In one embodiment, the radiating elements used in each of the arrays consist of air loaded microstrip patch antennas. The elements in each array are linearly arranged and polarization diversity is utilized so that the transmit and receive arrays can be spaced closely together.
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 April 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2020.
- 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.