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Expired European patentEurope

Switching regulator and lsi system

EP 1028528 B1 · Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

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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 August 27, 1999 and granted May 4, 2005. A European patent lasts at most 20 years from filing, so its term ended August 27, 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 February 27, 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.
FiledAugust 27, 1999
PublishedAugust 16, 2000
GrantedMay 4, 2005
Term endedAugust 27, 2019
Application numberEP 99940513
Classification (CPC)H03K17/164

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedAug 27, 1999PublishedAug 16, 2000Patent grantedMay 4, 2005Term endedAug 27, 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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