Expired European patentEurope
Hybrid protective composite
EP 1496331 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
No Claude kit for weapons
Claude doesn't help design weapons, ammunition or explosives, so this page has no Reinvent kit. To develop this one, work with a federally licensed manufacturer (many of these items are regulated) and a registered patent attorney or agent, listed on the USPTO roster.
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 August 10, 1999 and granted November 5, 2008. A European patent lasts at most 20 years from filing, so its term ended August 10, 2019.
- 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 February 10, 2025.
- 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.
FiledAugust 10, 1999
PublishedJanuary 12, 2005
GrantedNovember 5, 2008
Term endedAugust 10, 2019
Application numberEP 04024471
Classification (CPC)F41H5/0485
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.