Expired European patentEurope
Process for fabricating high temperature resistant fragmentable propellant charges, the charges thus obtained and their constituent powders
EP 0446085 B1 · Applicant: SOCIETE NATIONALE DES POUDRES ET EXPLOSIFS
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 February 11, 1991 and granted July 12, 1995. A European patent lasts at most 20 years from filing, so its term ended February 11, 2011.
- 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 August 11, 2016.
- 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.
FiledFebruary 11, 1991
PublishedSeptember 11, 1991
GrantedJuly 12, 1995
Term endedFebruary 11, 2011
Application numberEP 91400319
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.