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:
Mar. 21, 2006
Filed:
Apr. 29, 2003
Applicant:
Travis P. S. Thoms, San Lorenzo, CA (US);
Inventor:
Travis P. S. Thoms, San Lorenzo, CA (US);
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/12 (2006.01); C09K 11/06 (2006.01); C07D 311/96 (2006.01); C07F 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A family of non-polymeric heterogeneous spiro compounds having visible light emissive, hole-transport, electron transport or bipolar-transport properties may be used in organic light emitting devices (OLEDs), as an emissive layer in the OLEDs and/or in one or more of the charge transport layers, or as a host material for one or more of such layers.