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Expired European patentEurope

Method for manufacturing green light emitting diodes

EP 0102192 B1 · Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

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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 July 26, 1983 and granted June 1, 1988. A European patent lasts at most 20 years from filing, so its term ended July 26, 2003.
  • 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 January 26, 2009.
  • 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.
FiledJuly 26, 1983
PublishedMarch 7, 1984
GrantedJune 1, 1988
Term endedJuly 26, 2003
Application numberEP 83304314
Classification (CPC)H10H20/824 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 26, 1983PublishedMarch 7, 1984Patent grantedJune 1, 1988Term endedJuly 26, 2003

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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