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:
May. 13, 2008
Filed:
Apr. 04, 2007
Sachiko Yamagata, Kanagawa, JP;
Hiroko Abe, Tokyo, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Ryoji Nomura, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Sachiko Yamagata, Kanagawa, JP;
Hiroko Abe, Tokyo, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Ryoji Nomura, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Abstract
A light-emitting compound that can be easily applied to vacuum vapor deposition and exhibit long wavelength light is disclosed. Further, a light-emitting element without inferior luminescence properties due to the carbonization of a light-emitting compound during vapor deposition; and a light-emitting device that is composed of the light-emitting elements are also disclosed. A pyran derivative is represented by the following general formula 1: wherein Ris a hydrogen element or an alkoxy group.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile