Expired European patentEurope
Process for improving the pressure dependence of the combustion of solid-grains or firearms propellants, and their application as components of solid-grains or firearms propellants
EP 0002466 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 November 30, 1978 and granted June 17, 1981. A European patent lasts at most 20 years from filing, so its term ended November 30, 1998.
- 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 May 30, 2004.
- 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.
FiledNovember 30, 1978
PublishedJune 27, 1979
GrantedJune 17, 1981
Term endedNovember 30, 1998
Application numberEP 78101480
Classification (CPC)C06B21/0083 +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.