European application, no grantEurope
Polymers or block polymers of vinyl aromates and/or dienes containing ammonium groups, process for the manufacture and use thereof
EP 0248300 A2 · Applicant: BASF Aktiengesellschaft
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 May 23, 1987 and never granted as a European patent. Had it been granted, its 20-year term would have ended May 23, 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 November 23, 2012.
- 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.
FiledMay 23, 1987
PublishedDecember 9, 1987
GrantedNever granted
Term endedMay 23, 2007
Application numberEP 87107544
Classification (CPC)C08F8/34
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.