Expired European patentEurope
Aqueous dispersion of styrene-acrylic-type polymers and its use in the preparation of water-repellent adhesive compositions useful in tiling
EP 0338870 B1 · Applicant: SOCIETE FRANCAISE HOECHST Société anonyme dite:
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.
Why it's free to use
- Filed February 23, 1989 and granted April 22, 1992. A European patent lasts at most 20 years from filing, so its term ended February 23, 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 August 23, 2014.
- 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.
FiledFebruary 23, 1989
PublishedOctober 25, 1989
GrantedApril 22, 1992
Term endedFebruary 23, 2009
Application numberEP 89400509
Classification (CPC)C08F220/12 +2 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.