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Expired European patentEurope

Microcrystalline thin strip for magnetic material having high magnetic permeability

EP 0035037 B1 · Applicant: SUMITOMO SPECIAL METAL 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 May 10, 1980 and granted December 12, 1984. A European patent lasts at most 20 years from filing, so its term ended May 10, 2000.
  • 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 November 10, 2005.
  • 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.
FiledMay 10, 1980
PublishedSeptember 9, 1981
GrantedDecember 12, 1984
Term endedMay 10, 2000
Application numberEP 80900837
Classification (CPC)C22C45/02 +2 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedMay 10, 1980PublishedSep 9, 1981Patent grantedDec 12, 1984Term endedMay 10, 2000

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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