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Expired European patentEurope

Recovery method of ammonia from gaseous mixture

EP 1149801 B1 · Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.

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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 26, 2001 and granted January 26, 2011. A European patent lasts at most 20 years from filing, so its term ended April 26, 2021.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 26, 2001
PublishedOctober 31, 2001
GrantedJanuary 26, 2011
Term endedApril 26, 2021
Application numberEP 01110356
Classification (CPC)C01C1/12

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedApril 26, 2001PublishedOct 31, 2001Patent grantedJan 26, 2011Term endedApril 26, 2021

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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