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Expired European patentEurope

Manufacture of L-ascorbic acid and D-erythorbic acid

EP 1026257 B1 · Applicant: F. HOFFMANN-LA ROCHE AG

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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 January 13, 2000 and granted April 12, 2006. A European patent lasts at most 20 years from filing, so its term ended January 13, 2020.
  • 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 July 13, 2025.
  • 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.
FiledJanuary 13, 2000
PublishedAugust 9, 2000
GrantedApril 12, 2006
Term endedJanuary 13, 2020
Application numberEP 00100617
Classification (CPC)C12P17/04

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedJan 13, 2000PublishedAug 9, 2000Patent grantedApril 12, 2006Term endedJan 13, 2020

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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