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Expired European patentEurope

Process for the production of a spherical-particle shape of toners for electrophotography

EP 0197264 B1 · Applicant: Alpine Aktiengesellschaft

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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 14, 1986 and granted December 28, 1988. A European patent lasts at most 20 years from filing, so its term ended February 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 August 14, 2011.
  • 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 14, 1986
PublishedOctober 15, 1986
GrantedDecember 28, 1988
Term endedFebruary 14, 2006
Application numberEP 86101877
Classification (CPC)B02C19/068 +1 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedFeb 14, 1986PublishedOct 15, 1986Patent grantedDec 28, 1988Term endedFeb 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.