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Method for regulating a characteristic variable of a medium by adding a titration product, and regulation circuit therefor

EP 0170079 A2 · Applicant: Chemie und Filter GmbH

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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 July 2, 1985 and never granted as a European patent. Had it been granted, its 20-year term would have ended July 2, 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 January 2, 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.
FiledJuly 2, 1985
PublishedFebruary 5, 1986
GrantedNever granted
Term endedJuly 2, 2005
Application numberEP 85108178
Classification (CPC)G05D11/133

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJuly 2, 1985PublishedFeb 5, 1986Term endedJuly 2, 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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