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Expired European patentEurope

Process for the production of bitumens of a high penetration value, apparatus for carrying it out, and products thus obtained

EP 0252104 B1 · Applicant: CORI, Alessandro

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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 27, 1986 and granted June 12, 1991. A European patent lasts at most 20 years from filing, so its term ended November 27, 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 May 27, 2012.
  • 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 27, 1986
PublishedJanuary 13, 1988
GrantedJune 12, 1991
Term endedNovember 27, 2006
Application numberEP 87900089
Classification (CPC)C10C3/04

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedNov 27, 1986PublishedJan 13, 1988Patent grantedJune 12, 1991Term endedNov 27, 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

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