Expired European patentEurope
Process for reducing the risks of inflammation and explosion as a result of the decomposition of ethylene under high pressure, and device for carrying out the process
EP 0018881 B1 · Applicant: Société Chimique des Charbonnages
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 April 18, 1980 and granted September 15, 1982. A European patent lasts at most 20 years from filing, so its term ended April 18, 2000.
- 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 18, 2005.
- 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 18, 1980
PublishedNovember 12, 1980
GrantedSeptember 15, 1982
Term endedApril 18, 2000
Application numberEP 80400518
Classification (CPC)C08F10/02 +1 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.