The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2018
Filed:
Nov. 26, 2013
Cambridge Display Technology, Cambridgeshire, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Fredrik Jakobsson, Cambridge, GB;
Christian Nielsen, London, GB;
Jonathan Pillow, Stotfold, GB;
Francesco Distasio, Genoa, IT;
Edward Snedden, Newton-Le-Willows, GB;
Cambridge Display Technology Limited, Cambridgeshire, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Abstract
A light-emitting composition comprising a mixture of a fluorescent light-emitting material a triplet-accepting copolymer comprising a triplet-accepting repeat unit and a repeat unit of formula (I): wherein A is a divalent group; Rindependently in each occurrence is a substituent; Rin each occurrence is H or a substituent; and x independently in each occurrence is 0, 1, 2 or 3.