Parabola, antenna and manufacturing method for same
CA 1235799 A · Owner: Hitachi, Ltd. · Inventors: Ochiai, Izumi; Kurosawa, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A parabola antenna comprising a parabola surface whose thickness is uniformly decreased from an outer circumferential portion to a central portion of the parabola surface. The thickness of the parabola surface is smallest at the central portion. Also, a method for manufacturing such parabola antennal is disclosed herein.
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
- Granted April 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 2005.
- 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.