Expired European patentEurope
Process for thermal cracking of carbonaceous substances which increases gasoline fraction and light oil conversions
EP 0093501 B1 · Applicant: Asahi Kasei Kogyo Kabushiki Kaisha
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 March 28, 1983 and granted July 13, 1988. A European patent lasts at most 20 years from filing, so its term ended March 28, 2003.
- 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 September 28, 2008.
- 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.
FiledMarch 28, 1983
PublishedNovember 9, 1983
GrantedJuly 13, 1988
Term endedMarch 28, 2003
Application numberEP 83301721
Classification (CPC)C10G1/08 +2 more
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.