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. 29, 1998
Filed:
Jul. 21, 1997
Applicant:
Inventors:
Qinglong Hao, Fuchu, JP;
Qian Xu, Fuchu, JP;
Jun Li, Fuchu, JP;
Pengcheng Li, Fuchu, JP;
Baochan Liu, Fuchu, JP;
Atsushi Ogura, Fuchu, JP;
Qingfen Hao, Fuchu, JP;
Assignees:
Beijing Hongye Coating Materials Company, Beijing, CN;
Chemitech, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; C09K / ; C09K / ;
U.S. Cl.
CPC ...
2523 / ;
Abstract
Long decay luminescent materials having improved long decay time and improved high brightness is represented by the formula as