Expired European patentEurope
Water-in-oil emulsion blasting explosive composition
EP 0107891 B1 · Applicant: C-I-L 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 August 24, 1983 and granted September 30, 1987. A European patent lasts at most 20 years from filing, so its term ended August 24, 2003.
- 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 24, 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.
FiledAugust 24, 1983
PublishedMay 9, 1984
GrantedSeptember 30, 1987
Term endedAugust 24, 2003
Application numberEP 83304895
Classification (CPC)C06B47/145
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.