Expired European patentEurope
High temperature superconductor dielectric slow wave structures for accelerators and traveling wave tubes
EP 0764391 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Overview
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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 June 2, 1995 and granted March 19, 2003. A European patent lasts at most 20 years from filing, so its term ended June 2, 2015.
- 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 December 2, 2020.
- 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.
FiledJune 2, 1995
PublishedMarch 26, 1997
GrantedMarch 19, 2003
Term endedJune 2, 2015
Application numberEP 95921445
Classification (CPC)H05H9/02 +1 more
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.