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:
Feb. 21, 2017
Filed:
Mar. 19, 2004
Brian Tierney, Cambridgeshire, GB;
Ilaria Grizzi, Cambridge, GB;
Clare Foden, Cambridge, GB;
Nalin Patel, Cambridge, GB;
Mark Leadbeater, Cambridge, GB;
Brian Tierney, Cambridgeshire, GB;
Ilaria Grizzi, Cambridge, GB;
Clare Foden, Cambridge, GB;
Nalin Patel, Cambridge, GB;
Mark Leadbeater, Cambridge, GB;
CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, Cambridgeshire, GB;
Abstract
A polymer comprising a first repeat unit of formula (I), wherein each Ar is independently selected from optionally substituted aryl or heteroaryl and the group of formula (I) is present in a molar ratio of less than or equal to 10%, and, optionally, a second, optionally substituted repeat unit having a single nitrogen atom in its backbone of formula —Ar—N(Ar)—Ar— in a molar ratio of no greater than 5%.