Scanning electromagnetic beam systems
CA 2061399 A1 · Owner: Siemens Plessey Electronic Systems Limited · Inventors: Peckham, Richard; Peckham, Richard; Whitehurst, Jonathan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scanning electromagnetic beam system comprising a source of electromagnetic energy, a linear antenna array comprising a plurality of radiator elements, beamformer means via which energy is fed from the source to the radiator elements of the array phase control means, for selectively controlling the phase of signals fed from the source via the beamformer means to the elements of the array thereby to effect, successive TO and FRO scans of the beam across a predetermined angular sector, amplitude control means for selectively controlling the amplitude of signals fed from the source via the beamformer means to the elements of the array thereby to effect a predetermined amplitude distribution …
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 18, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 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.