Expired European patentEurope
Pyrotechnic compositions for the production of coloured fireworks
EP 0252803 B1 · Applicant: ETIENNE LACROIX - TOUS ARTIFICES SA
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
No Claude kit for weapons
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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 June 26, 1987 and granted March 18, 1992. A European patent lasts at most 20 years from filing, so its term ended June 26, 2007.
- 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 December 26, 2012.
- 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.
FiledJune 26, 1987
PublishedJanuary 13, 1988
GrantedMarch 18, 1992
Term endedJune 26, 2007
Application numberEP 87401482
Classification (CPC)C06B29/00 +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.