Expired European patentEurope
Filter with a main waveguide loaded with lateral waveguides
EP 0164050 B1 · Applicant: ALCATEL THOMSON FAISCEAUX HERTZIENS
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 28, 1985 and granted March 22, 1989. A European patent lasts at most 20 years from filing, so its term ended May 28, 2005.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by November 28, 2010.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledMay 28, 1985
PublishedDecember 11, 1985
GrantedMarch 22, 1989
Term endedMay 28, 2005
Application numberEP 85106515
Classification (CPC)H01P1/212
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.