Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Reexamination Certificate
2006-10-17
2006-10-17
Koslow, C. Melissa (Department: 1755)
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C252S301360, C250S370110
Reexamination Certificate
active
07122129
ABSTRACT:
The present invention provides a fluorescent substance represented by the following general formula: (A1−xBx)2Si2O7, wherein A is at least one member selected from the group consisting of Gd, Y, Lu and La, B is at least one member selected from the group consisting of rare earth elements other than A and x is a numerical value specified by the formula: 0<x≦0.2 and which can emit light rays having a wavelength falling within the range of ultraviolet, visible and infrared regions in response to, for instance, optical stimuli, electron beam stimuli, electric field stimuli, stress stimuli and radiation stimuli; a fluorescent composition comprising such a fluorescent substance dispersed in a silica glass matrix; and a scintillator obtained using the foregoing substance or composition. These fluorescent substance, fluorescent composition, scintillator material and fluorescent material have high luminous outputs and are excellent in the processability.
REFERENCES:
patent: 3715611 (1973-02-01), De Mesquita et al.
patent: 4101781 (1978-07-01), Neukermans et al.
patent: 4185201 (1980-01-01), Stevels
patent: 4208611 (1980-06-01), Watanabe et al.
patent: 4316817 (1982-02-01), Cusano et al.
patent: 4418452 (1983-12-01), Kuhl et al.
patent: 5663005 (1997-09-01), Dooms et al.
patent: 6437336 (2002-08-01), Pauwels et al.
patent: 54-62988 (1979-05-01), None
patent: 56-5883 (1981-01-01), None
patent: 56-155283 (1981-12-01), None
patent: 57-131278 (1982-08-01), None
patent: 4-214788 (1992-08-01), None
patent: 2002-80847 (2002-03-01), None
Abstract for JP 56-5883, Jan. 21, 1981.
Translation for JP 2002-80847, Mar. 22, 2002.
Susa Kenzou
Yagi Yasuhiro
Antonelli, Terry Stout and Kraus, LLP.
Hitachi Chemical Co. Ltd.
Koslow C. Melissa
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