X-ray fluorescent analysis apparatus

X-ray or gamma ray systems or devices – Specific application – Fluorescence

Reexamination Certificate

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C378S042000, C378S048000, C378S096000

Reexamination Certificate

active

11264403

ABSTRACT:
The change in the sample size and a change in background intensity due to the coexisting element are measured in real time to thereby automatically change a measurement time, the detection lower limit is kept constant, so that a fluorescent X-ray apparatus is provided that is capable of measuring every time in the same detection lower limit even in a case where there have existed a change in size of a sample, a change in sensitivity due to a difference in main ingredient, and a change of a magnitude in background due to an influence of a coexisting element.

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patent: 6115450 (2000-09-01), Hasegawa
patent: 6173037 (2001-01-01), Brouwer
patent: 6370220 (2002-04-01), Stoop
patent: 6765205 (2004-07-01), Ochiai et al.
patent: 7016462 (2006-03-01), Keville et al.
patent: 2002/0154732 (2002-10-01), Grodzins et al.
patent: 2005/0053193 (2005-03-01), Hasegawa
patent: 2005/0087699 (2005-04-01), Miyake
patent: 2006/0029182 (2006-02-01), Tani et al.
patent: H03-221852 (1991-09-01), None
patent: 2001-133419 (2001-05-01), None
patent: 2004-150990 (2004-05-01), None
patent: WO 03/043497 (2003-05-01), None
“Handbook for X-ray Fluorescent Analysis,” 4thedition, Regaku Corporation, Jul. 1993, pp. 63-65.
Yoichi Gohshi “Lower Limit of Quantification with X-ray Fluorescence Analysis” Mar. 10, 1994.
Japanese Office Action dated Jun. 12, 2007.

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