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Expired European patentEurope

Carrier for gas-treating catalyst, method for production thereof, and gas-treating catalyst incorporating said carrier therein

EP 0370523 B1 · Applicant: NIPPON SHOKUBAI CO., LTD.

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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 November 24, 1989 and granted December 23, 1992. A European patent lasts at most 20 years from filing, so its term ended November 24, 2009.
  • 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 May 24, 2015.
  • 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.
FiledNovember 24, 1989
PublishedMay 30, 1990
GrantedDecember 23, 1992
Term endedNovember 24, 2009
Application numberEP 89121746
Classification (CPC)B01J23/38 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedNov 24, 1989PublishedMay 30, 1990Patent grantedDec 23, 1992Term endedNov 24, 2009

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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