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European application, no grantEurope

Method of producing asphalt having an increased penetration and penetration index

EP 0547766 A2 · Applicant: EXXON RESEARCH AND ENGINEERING 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 18, 1992 and never granted as a European patent. Had it been granted, its 20-year term would have ended November 18, 2012.
  • 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 18, 2018.
  • 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 18, 1992
PublishedJune 23, 1993
GrantedNever granted
Term endedNovember 18, 2012
Application numberEP 92310492
Classification (CPC)C10C3/026

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedNov 18, 1992PublishedJune 23, 1993Term endedNov 18, 2012

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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