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Expired European patentEurope

Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam

EP 0206548 B1 · Applicant: MINNESOTA MINING AND MANUFACTURING 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 May 28, 1986 and granted January 2, 1992. A European patent lasts at most 20 years from filing, so its term ended May 28, 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 November 28, 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.
FiledMay 28, 1986
PublishedDecember 30, 1986
GrantedJanuary 2, 1992
Term endedMay 28, 2006
Application numberEP 86304050
Classification (CPC)C11D3/0094 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMay 28, 1986PublishedDec 30, 1986Patent grantedJan 2, 1992Term endedMay 28, 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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