Aperiodic array antenna
CA 2501227 A1 · Owner: Ipr Licensing, Inc. · Inventors: Chiang, Bing; Palmer, William R.; Gainey, Kenneth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An antenna array that uses at least two passive antennas (110 112) and one , active antenna (120) disposed above a ground plane (140) but electrically , isolated from the ground plane and a respective resonant strip (1216) positioned beneath each passive antenna. The passive antenna elements are positioned about the active element, and each of the at least two passive antenna elements is individually set to a reflective or a transmissive mode to change the characteristics of an input/output beam pattern of the antenna apparatus.
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 February 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2025.
- 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.