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Expired European patentEurope

Process for reducing and reclaiming electrolyte containing tin salt

EP 0054074 B1 · Applicant: FUJISASH COMPANY

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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 June 23, 1980 and granted May 13, 1987. A European patent lasts at most 20 years from filing, so its term ended June 23, 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 December 23, 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.
FiledJune 23, 1980
PublishedJune 23, 1982
GrantedMay 13, 1987
Term endedJune 23, 2000
Application numberEP 80901147
Classification (CPC)C25D21/18

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJune 23, 1980PublishedJune 23, 1982Patent grantedMay 13, 1987Term endedJune 23, 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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