Expired European patentEurope
Ultrafast gas-generating device with improved safety
EP 0180488 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 September 3, 1985 and granted November 17, 1988. A European patent lasts at most 20 years from filing, so its term ended September 3, 2005.
- 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 March 3, 2011.
- 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.
FiledSeptember 3, 1985
PublishedMay 7, 1986
GrantedNovember 17, 1988
Term endedSeptember 3, 2005
Application numberEP 85401708
Classification (CPC)F42B3/04 +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.