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Expired European patentEurope

Method and packaging utilizing calcium cyanamide for soil treatment

EP 1007492 B1 · Applicant: Hartman, Richard, O., W.

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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 20, 1997 and granted December 14, 2005. A European patent lasts at most 20 years from filing, so its term ended October 20, 2017.
  • 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 20, 2023.
  • 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 20, 1997
PublishedJune 14, 2000
GrantedDecember 14, 2005
Term endedOctober 20, 2017
Application numberEP 97946245
Classification (CPC)C05C7/00

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedOct 20, 1997PublishedJune 14, 2000Patent grantedDec 14, 2005Term endedOct 20, 2017

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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