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:
Jun. 15, 2010
Filed:
Aug. 28, 2003
Takashi Takeda, Sapporo-shi, JP;
Kenji Ono, Nerima-ku, JP;
Susumu Miyazaki, Kitasoma-gun, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A phosphor having high luminescence when excited by vacuum ultraviolet ray and a vacuum ultraviolet radiation excited light-emitting device comprising the phosphor. The phosphor comprises a metal oxide comprises at least one metal element Mselected from the group consisting of Ca, Sr and Ba, at least one metal element Mselected from the group consisting of Y, La, Gd and Lu, at least one metal element Mselected from the group consisting of Si and Ge and oxygen, and at least one metal element Lnselected from the group consisting of Ce, Pr, Nd, Pm, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Mn, as an activator.