Patent Yard Sign in
Expired European patentEurope

Apparatus for regulating the amine charge onto a culumn for purifying natural gas

EP 0188955 B1 · Applicant: SOCIETE NATIONALE ELF AQUITAINE (PRODUCTION)

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed December 19, 1985 and granted April 26, 1989. A European patent lasts at most 20 years from filing, so its term ended December 19, 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 June 19, 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.
FiledDecember 19, 1985
PublishedJuly 30, 1986
GrantedApril 26, 1989
Term endedDecember 19, 2005
Application numberEP 85402563
Classification (CPC)B01D53/30 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedDec 19, 1985PublishedJuly 30, 1986Patent grantedApril 26, 1989Term endedDec 19, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.