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Expired European patentEurope

Alumina-base abrasion resistant material

EP 0256182 B1 · Applicant: MITSUI MINING COMPANY, LIMITED

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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 August 14, 1986 and granted April 18, 1990. A European patent lasts at most 20 years from filing, so its term ended August 14, 2006.
  • 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 14, 2012.
  • 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 14, 1986
PublishedFebruary 24, 1988
GrantedApril 18, 1990
Term endedAugust 14, 2006
Application numberEP 86306297
Classification (CPC)C04B35/1115

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedAug 14, 1986PublishedFeb 24, 1988Patent grantedApril 18, 1990Term endedAug 14, 2006

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.