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Expired European patentEurope

Hazard avoiding or diminishing method for an installation and its environment due to reacting mixtures

EP 0056830 B1 · Applicant: Jahn, Hermann, Dr.

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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 January 25, 1981 and granted April 26, 1989. A European patent lasts at most 20 years from filing, so its term ended January 25, 2001.
  • 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 July 25, 2006.
  • 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.
FiledJanuary 25, 1981
PublishedAugust 4, 1982
GrantedApril 26, 1989
Term endedJanuary 25, 2001
Application numberEP 81100534
Classification (CPC)G21C9/00

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJan 25, 1981PublishedAug 4, 1982Patent grantedApril 26, 1989Term endedJan 25, 2001

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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