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Expired European patentEurope

Wrapper type combined magnetic energy generator and magnetic energy lamp

EP 1840939 B1 · Applicant: Li, Jin

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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.

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Why it's free to use

  • Filed December 20, 2005 and granted October 26, 2016. A European patent lasts at most 20 years from filing, so its term ended December 20, 2025.
  • 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.
FiledDecember 20, 2005
PublishedOctober 3, 2007
GrantedOctober 26, 2016
Term endedDecember 20, 2025
Application numberEP 05819828
Classification (CPC)H01J65/048

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedDec 20, 2005PublishedOct 3, 2007Patent grantedOct 26, 2016Term endedDec 20, 2025

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.