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Expired European patentEurope

Procedure for the preparation of D-(-)-lactic acid

EP 0232556 B1 · Applicant: STICHTING NEDERLANDS INSTITUUT VOOR ZUIVELONDERZOEK

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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 27, 1986 and granted December 12, 1990. A European patent lasts at most 20 years from filing, so its term ended October 27, 2006.
  • 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 27, 2012.
  • 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 27, 1986
PublishedAugust 19, 1987
GrantedDecember 12, 1990
Term endedOctober 27, 2006
Application numberEP 86201876
Classification (CPC)C12P7/56

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 27, 1986PublishedAug 19, 1987Patent grantedDec 12, 1990Term endedOct 27, 2006

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.