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Expired European patentEurope

Process for producing a mixture of inosinic acid and guanosinic acid by direct phosphorylation

EP 0453597 B1 · Applicant: AJINOMOTO CO., 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 25, 1990 and granted April 19, 1995. A European patent lasts at most 20 years from filing, so its term ended April 25, 2010.
  • 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, 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.
FiledApril 25, 1990
PublishedOctober 30, 1991
GrantedApril 19, 1995
Term endedApril 25, 2010
Application numberEP 90107834
Classification (CPC)C07H19/20

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedApril 25, 1990PublishedOct 30, 1991Patent grantedApril 19, 1995Term endedApril 25, 2010

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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