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Expired European patentEurope

Process for the production of polyurethanes from tuluylendiisocyanate residues and their use for preparing panels and moulded articles

EP 0010687 B1 · Applicant: BAYER AG

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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 October 17, 1979 and granted July 28, 1982. A European patent lasts at most 20 years from filing, so its term ended October 17, 1999.
  • 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 April 17, 2005.
  • 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.
FiledOctober 17, 1979
PublishedMay 14, 1980
GrantedJuly 28, 1982
Term endedOctober 17, 1999
Application numberEP 79104003
Classification (CPC)C08G18/70 +2 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedOct 17, 1979PublishedMay 14, 1980Patent grantedJuly 28, 1982Term endedOct 17, 1999

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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