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Expired European patentEurope

Oxygen absorption composition

EP 0835685 B1 · Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.

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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 October 11, 1997 and granted September 18, 2002. A European patent lasts at most 20 years from filing, so its term ended October 11, 2017.
  • 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 April 11, 2023.
  • 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.
FiledOctober 11, 1997
PublishedApril 15, 1998
GrantedSeptember 18, 2002
Term endedOctober 11, 2017
Application numberEP 97117632
Classification (CPC)B01J20/20 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedOct 11, 1997PublishedApril 15, 1998Patent grantedSep 18, 2002Term endedOct 11, 2017

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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