Horn antenna
CA 2293762 A1 · Owner: Ohlsson, Magnus · Inventors: Marcus, Carina; Ohlsson, Magnus; Fredriksson, Hakan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Horn antenna for transmission of microwaves comprising a conical horn (2) for , directional transmission and reception of microwaves and at the center of the , horn's narrowest part a transition piece (3) separating a wave guide from the environment. The transition piece (3) is tapered and is characterized by its tapering part (3a) being arranged so as to operate outside a normally fluidfilled circular space (4) between the horn (2) and the transition piece (3) so that the fluid in the space (4) does not affect the transmission of microwaves through the transition piece (3).
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 May 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.