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Expired European patentEurope

Preparation of white calcium phosphates from offcolored lime

EP 0086876 B1 · Applicant: FMC 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 October 31, 1982 and granted June 29, 1988. A European patent lasts at most 20 years from filing, so its term ended October 31, 2002.
  • 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 May 1, 2008.
  • 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.
FiledOctober 31, 1982
PublishedAugust 31, 1983
GrantedJune 29, 1988
Term endedOctober 31, 2002
Application numberEP 82110056
Classification (CPC)C01B25/322

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedOct 31, 1982PublishedAug 31, 1983Patent grantedJune 29, 1988Term endedOct 31, 2002

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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