Expired Canadian patentCanada
Microwave attenuator circuit
CA 2605975 C · Owner: Raytheon Company · Inventors: Schiller, Stephen M.; Zhang, Yanmin; Quan, Clifton
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microwave attenuator circuit is disclosed including a combination of a , plurality of quarter wave transformers (Z1 Z2) and a plurality of resistive , elements (R1 R2).
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 16, 2006 and granted December 9, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 2006
GrantedDecember 9, 2014
Term endedMay 16, 2026
Patent numberCA 2605975 C
Classification (IPC)H01P1/22 +1 more
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.