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Expired European patentEurope

Microbial nitrate removal from tobacco materials by dissimilatory denitrification

EP 0005082 B1 · Applicant: PHILIP MORRIS INCORPORATED

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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 April 25, 1979 and granted May 12, 1982. A European patent lasts at most 20 years from filing, so its term ended April 25, 1999.
  • 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 October 25, 2004.
  • 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.
FiledApril 25, 1979
PublishedOctober 31, 1979
GrantedMay 12, 1982
Term endedApril 25, 1999
Application numberEP 79300706
Classification (CPC)C02F3/34 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedApril 25, 1979PublishedOct 31, 1979Patent grantedMay 12, 1982Term endedApril 25, 1999

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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