Expired European patentEurope
Valve for vessel containing a pressurized gas, in particular liquefied petroleum gas, a conical pre-sealing ring for said vessel, and a cylinder comprising such a valve
EP 0134062 B1 · Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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, and the Claude kit works from them.
Why it's free to use
- Filed August 17, 1984 and granted September 23, 1987. A European patent lasts at most 20 years from filing, so its term ended August 17, 2004.
- 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 17, 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.
FiledAugust 17, 1984
PublishedMarch 13, 1985
GrantedSeptember 23, 1987
Term endedAugust 17, 2004
Application numberEP 84201199
Classification (CPC)F16L29/02 +1 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.