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Expired European patentEurope

Improved process for removal and recovery of vinyl chloride monomer from vent gas stream in polyvinyl chloride plant

EP 0027805 B1 · Applicant: The B.F. GOODRICH Company

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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 March 10, 1980 and granted June 15, 1983. A European patent lasts at most 20 years from filing, so its term ended March 10, 2000.
  • 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 September 10, 2005.
  • 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.
FiledMarch 10, 1980
PublishedMay 6, 1981
GrantedJune 15, 1983
Term endedMarch 10, 2000
Application numberEP 80900743
Classification (CPC)B01D53/70

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedMarch 10, 1980PublishedMay 6, 1981Patent grantedJune 15, 1983Term endedMarch 10, 2000

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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