Expired European patentEurope
Process for separating a carboxylic acid of 1-8 carbon atoms from a mixture thereof with water and/or one or more other oxygenated aliphatic compounds
EP 0132049 B1 · Applicant: The British Petroleum Company p.l.c.
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 June 14, 1984 and granted October 29, 1986. A European patent lasts at most 20 years from filing, so its term ended June 14, 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 December 14, 2009.
- 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.
FiledJune 14, 1984
PublishedJanuary 23, 1985
GrantedOctober 29, 1986
Term endedJune 14, 2004
Application numberEP 84304026
Classification (CPC)C07C51/47
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.