Expired European patentEurope
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EP 0263446 B1 · Applicant: DAINICHISEIKA COLOR & CHEMICALS MFG. CO. LTD.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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, and the Claude kit works from them.
Why it's free to use
- Filed October 2, 1987 and granted March 22, 1995. A European patent lasts at most 20 years from filing, so its term ended October 2, 2007.
- 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 2, 2013.
- 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 2, 1987
PublishedApril 13, 1988
GrantedMarch 22, 1995
Term endedOctober 2, 2007
Application numberEP 87114420
Classification (CPC)C09D11/50 +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.