Expired European patentEurope
Coated oxidizing agent
EP 0959057 B1 · Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Read the whole patent
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.
Why it's free to use
- Filed October 17, 1997 and granted June 11, 2003. A European patent lasts at most 20 years from filing, so its term ended October 17, 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 17, 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 17, 1997
PublishedNovember 24, 1999
GrantedJune 11, 2003
Term endedOctober 17, 2017
Application numberEP 97944165
Classification (CPC)C06B45/18 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.