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Expired European patentEurope

Method for developing and increasing, resp. the fertility of soil

EP 0174944 B1 · Applicant: VAROSEPITESI TUDOMANYOS ES TERVEZO INTEZET

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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 February 21, 1985 and granted July 12, 1989. A European patent lasts at most 20 years from filing, so its term ended February 21, 2005.
  • 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 August 21, 2010.
  • 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.
FiledFebruary 21, 1985
PublishedMarch 26, 1986
GrantedJuly 12, 1989
Term endedFebruary 21, 2005
Application numberEP 85901051
Classification (CPC)A01C23/04

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedFeb 21, 1985PublishedMarch 26, 1986Patent grantedJuly 12, 1989Term endedFeb 21, 2005

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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