Expired European patentEurope
Cationic polymerization of bromoalkenyl aromatic compounds with aromatic chain transfer agent, and products
EP 0245475 B1 · Applicant: GENERAL ELECTRIC COMPANY
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 November 14, 1986 and granted October 24, 1990. A European patent lasts at most 20 years from filing, so its term ended November 14, 2006.
- 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 14, 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.
FiledNovember 14, 1986
PublishedNovember 19, 1987
GrantedOctober 24, 1990
Term endedNovember 14, 2006
Application numberEP 86907159
Classification (CPC)C08K5/03 +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.