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Expired European patentEurope

Inhibition of fouling or coke formation in hydrocarbon processing equipment

EP 0714969 B1 · Applicant: NALCO CHEMICAL 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 November 9, 1995 and granted June 20, 2001. A European patent lasts at most 20 years from filing, so its term ended November 9, 2015.
  • 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 9, 2021.
  • 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.
FiledNovember 9, 1995
PublishedJune 5, 1996
GrantedJune 20, 2001
Term endedNovember 9, 2015
Application numberEP 95308010
Classification (CPC)C07C7/20 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedNov 9, 1995PublishedJune 5, 1996Patent grantedJune 20, 2001Term endedNov 9, 2015

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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