Expired European patentEurope
Shell case
EP 0163033 B1 · Applicant: Aktiebolaget Bofors
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 March 22, 1985 and granted July 26, 1989. A European patent lasts at most 20 years from filing, so its term ended March 22, 2005.
- 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 September 22, 2010.
- 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.
FiledMarch 22, 1985
PublishedDecember 4, 1985
GrantedJuly 26, 1989
Term endedMarch 22, 2005
Application numberEP 85103370
Classification (CPC)F42B12/32
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.