Expired European patentEurope
Propelland based on phase-stabilized ammonium nitrate
EP 0705809 B1 · Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed August 18, 1995 and granted July 2, 1997. A European patent lasts at most 20 years from filing, so its term ended August 18, 2015.
- 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 February 18, 2021.
- 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.
FiledAugust 18, 1995
PublishedApril 10, 1996
GrantedJuly 2, 1997
Term endedAugust 18, 2015
Application numberEP 95112990
Classification (CPC)C06B23/007 +1 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.