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European application, no grantEurope

Back wash method for filtration modules using internally pressurized hollow fibers

EP 0669159 A1 · Applicant: DIC Degrémont KK

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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 February 23, 1995 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 23, 2015.
  • 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 August 23, 2020.
  • 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.
FiledFebruary 23, 1995
PublishedAugust 30, 1995
GrantedNever granted
Term endedFebruary 23, 2015
Application numberEP 95102588
Classification (CPC)B01D65/02

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedFeb 23, 1995PublishedAug 30, 1995Term endedFeb 23, 2015

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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