Expired European patentEurope
Mine
EP 0069844 B1 · Applicant: Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft
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 May 15, 1982 and granted December 12, 1984. A European patent lasts at most 20 years from filing, so its term ended May 15, 2002.
- 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 November 15, 2007.
- 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.
FiledMay 15, 1982
PublishedJanuary 19, 1983
GrantedDecember 12, 1984
Term endedMay 15, 2002
Application numberEP 82104286
Classification (CPC)F42B23/00
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.