Expired European patentEurope
Azido nitramine
EP 0120668 B1 · Applicant: HERCULES INCORPORATED
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 March 20, 1984 and granted March 4, 1987. A European patent lasts at most 20 years from filing, so its term ended March 20, 2004.
- 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 20, 2009.
- 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 20, 1984
PublishedOctober 3, 1984
GrantedMarch 4, 1987
Term endedMarch 20, 2004
Application numberEP 84301878
Classification (CPC)C06B25/34 +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.