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:
Dec. 08, 2009
Filed:
May. 10, 2002
Applicants:
Richard O'dell, Taufkirchen, DE;
Carl Towns, Stansted, GB;
Inventors:
Richard O'Dell, Taufkirchen, DE;
Carl Towns, Stansted, GB;
Assignee:
Cambridge Display Technology Limited, Cambridgeshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 79/08 (2006.01); H01J 1/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
A polymer having a first repeat unit comprising a group having general formula (I) which is substituted or unsubstituted: where at least one of Ror Rcomprises at least two substituted or unsubstituted aryl or heteroaryl groups and excluding the group having general formula (I) where one or both of Rand Rcomprises a triarylamine group.