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Expired European patentEurope

Apparatus and method for manufacturing gypsum board

EP 0759840 B1 · Applicant: NATIONAL GYPSUM COMPANY

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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 23, 1995 and granted September 30, 1998. A European patent lasts at most 20 years from filing, so its term ended May 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 November 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.
FiledMay 23, 1995
PublishedMarch 5, 1997
GrantedSeptember 30, 1998
Term endedMay 23, 2015
Application numberEP 95921352
Classification (CPC)B28B19/0092

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedMay 23, 1995PublishedMarch 5, 1997Patent grantedSep 30, 1998Term endedMay 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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