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:
Sep. 30, 2003
Filed:
Dec. 07, 2000
Applicant:
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/102 ; H01J 1/502 ; C09K 1/178 ; C09K 1/165 ; C09K 1/163 ;
U.S. Cl.
CPC ...
H01J 1/102 ; H01J 1/502 ; C09K 1/178 ; C09K 1/165 ; C09K 1/163 ;
Abstract
A phosphor for a vacuum ultraviolet excited light emitting device, obtained (1) by adding Eu or Tb as an activating agent to a substrate comprising a compound represented by the general formula M M M O , wherein M represents at least one element selected from Na and Li, M represents at least one element selected from Gd and Y, and M at least one element selected from Ge and Si; (2) by adding Eu as an activating agent to a substrate comprising a compound containing SrO, Al O and B O ; or (3) by adding Eu or Tb as an activating agent to a substrate comprising a compound represented by the general formula M O CN , wherein M represents at least one element selected from La, Y and Gd.