Expired European patentEurope
Process for the production of a multi-layer coating, water-dilutable coating compositions, water-dilutable emulsion polymers and process for the production of water-dilutable emulsion polymers
EP 0447428 B1 · Applicant: BASF Lacke + Farben AG
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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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.
Why it's free to use
- Filed November 27, 1989 and granted July 28, 1993. A European patent lasts at most 20 years from filing, so its term ended November 27, 2009.
- 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 May 27, 2015.
- 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.
FiledNovember 27, 1989
PublishedSeptember 25, 1991
GrantedJuly 28, 1993
Term endedNovember 27, 2009
Application numberEP 90900099
Classification (CPC)B05D7/532
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.