Expired European patentEurope
Stable nitrate/slurry explosives
EP 0194775 B1 · Applicant: Du Pont Canada Inc.
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 February 21, 1986 and granted May 31, 1989. A European patent lasts at most 20 years from filing, so its term ended February 21, 2006.
- 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 August 21, 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.
FiledFebruary 21, 1986
PublishedSeptember 17, 1986
GrantedMay 31, 1989
Term endedFebruary 21, 2006
Application numberEP 86301261
Classification (CPC)C06B47/14
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.