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Expired European patentEurope

Water absorptive material, water absorptive article and their production method

EP 0624618 B1 · Applicant: NIPPON SHOKUBAI CO., LTD.

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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 August 27, 1993 and granted January 27, 1999. A European patent lasts at most 20 years from filing, so its term ended August 27, 2013.
  • 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 27, 2019.
  • 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 27, 1993
PublishedNovember 17, 1994
GrantedJanuary 27, 1999
Term endedAugust 27, 2013
Application numberEP 93919587
Classification (CPC)A61F13/15 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedAug 27, 1993PublishedNov 17, 1994Patent grantedJan 27, 1999Term endedAug 27, 2013

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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