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European application, no grantEurope

Spiral filtration module with improved cleanability and operating efficiency

EP 0472264 A2 · Applicant: KOCH MEMBRANE SYSTEMS, INC

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Overview

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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 May 28, 1991 and never granted as a European patent. Had it been granted, its 20-year term would have ended May 28, 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 November 28, 2016.
  • 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 28, 1991
PublishedFebruary 26, 1992
GrantedNever granted
Term endedMay 28, 2011
Application numberEP 91304812
Classification (CPC)B01D63/10 +1 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedMay 28, 1991PublishedFeb 26, 1992Term endedMay 28, 2011

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

Cross-check elsewhere

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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