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EP 0134575 B1 · Applicant: NORSK HYDRO A/S

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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.

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Why it's free to use

  • Filed August 31, 1984 and granted March 16, 1988. A European patent lasts at most 20 years from filing, so its term ended August 31, 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 March 3, 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 31, 1984
PublishedMarch 20, 1985
GrantedMarch 16, 1988
Term endedAugust 31, 2004
Application numberEP 84110404
Classification (CPC)B65D88/1668 +1 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedAug 31, 1984PublishedMarch 20, 1985Patent grantedMarch 16, 1988Term endedAug 31, 2004

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.