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Expired European patentEurope

Perforated plasma confinement ring in plasma reactors

EP 1149403 B1 · Applicant: LAM RESEARCH CORPORATION

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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.

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Why it's free to use

  • Filed December 22, 1999 and granted June 29, 2016. A European patent lasts at most 20 years from filing, so its term ended December 22, 2019.
  • 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 June 22, 2025.
  • 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 22, 1999
PublishedOctober 31, 2001
GrantedJune 29, 2016
Term endedDecember 22, 2019
Application numberEP 99966604
Classification (CPC)H01J37/32623 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedDec 22, 1999PublishedOct 31, 2001Patent grantedJune 29, 2016Term endedDec 22, 2019

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

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