Expired European patentEurope
Composite materials useful in the protection of aircraft structures
EP 0452463 B1 · Applicant: Royal Ordnance plc
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 8, 1990 and granted September 24, 1997. A European patent lasts at most 20 years from filing, so its term ended November 8, 2010.
- 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 8, 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.
FiledNovember 8, 1990
PublishedOctober 23, 1991
GrantedSeptember 24, 1997
Term endedNovember 8, 2010
Application numberEP 90916765
Classification (CPC)F41H5/023 +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.