Expired European patentEurope
Process for the preparation of methane by anaerobic digestion of organic materials
EP 0152730 B1 · Applicant: L'Etat belge, représenté par le Secrétaire Général des Services de la Programmation de la Politique Scientifique
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed December 13, 1984 and granted May 13, 1987. A European patent lasts at most 20 years from filing, so its term ended December 13, 2004.
- 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 June 13, 2010.
- 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.
FiledDecember 13, 1984
PublishedAugust 28, 1985
GrantedMay 13, 1987
Term endedDecember 13, 2004
Application numberEP 84870175
Classification (CPC)C12M23/58 +2 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.