Expired European patentEurope
Digital directional relay
EP 1804357 B1 · Applicant: KABUSHIKI KAISHA TOSHIBA
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 January 28, 2003 and granted December 2, 2009. A European patent lasts at most 20 years from filing, so its term ended January 28, 2023.
- Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
- 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.
FiledJanuary 28, 2003
PublishedJuly 4, 2007
GrantedDecember 2, 2009
Term endedJanuary 28, 2023
Application numberEP 07007918
Classification (CPC)H02H3/385 +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.