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Expired European patentEurope

Interstage casing for a pump made of sheet metal and method of manufacturing the same

EP 0492575 B1 · Applicant: EBARA CORPORATION

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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.

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Why it's free to use

  • Filed December 23, 1991 and granted August 2, 1995. A European patent lasts at most 20 years from filing, so its term ended December 23, 2011.
  • 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 June 23, 2017.
  • 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.
FiledDecember 23, 1991
PublishedJuly 1, 1992
GrantedAugust 2, 1995
Term endedDecember 23, 2011
Application numberEP 91122108
Classification (CPC)F04D1/063 +1 more

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

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Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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