US5598451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the sulfur component contained in oil
Assignee: D K K CORP
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Filing: 1995-11-07
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Granted: 1997-01-28
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Expires: 2015-11-07
Abstract
Abstract An apparatus for measuring the Sulfur component contained in oil includes an X-ray tube having a target made of Titanium or Scandium, a filter made of Titanium or Scandium for filtering said X-ray radiated from the X-ray tube, a measurement cell for introducing a sample to be measured therein, and a detector for detecting fluorescent X-rays radiated from the sample. According to the invention, the X-ray tube has a target made of Titanium or Scandium and the X-rays generated from the X-ray tube are filtered by the filter, which is made of Titanium or Scandium, so that the background of the X-rays for the measurement against the fluorescent X-rays of the Sulfur is reduced and therefore even a small amount of Sulfur contained in the sample can be correctly detected.
Inventors
- 👤 Kazunaga Ohno
- 👤 Yukio Hashizume
- 👤 Kazuo Husimi
- 👤 Masahiko Kuwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:19
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N33/00; G01N33/26; G01N33/28; G01N33/2835; G01N33/287; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Titanium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Titanium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 2
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Titanium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Titanium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 3
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Scandium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Scandium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 4
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Scandium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Scandium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 5
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Scandium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Titanium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 6
Independent Claim
87 words
An apparatus for measuring the Sulfur component contained in oil comprising: an X-ray tube having a target made of Scandium; a filtering means for filtering X-rays radiated from said X-ray tube comprising a filter made of Titanium; a measurement cell for introducing a sample to be measured therein; an X-ray applying means for applying X-rays filtered by said filtering means onto said sample in the measurement cell to emit fluorescent X-rays from said sample; and a detecting means for detecting said fluorescent X-rays emitted from said sample.
Claim 7
Dependent Claim
50 words
An apparatus for measuring the Sulfur component contained in oil according to claim 1, wherein: said detecting means comprises a measurement circuit for measuring an intensity of said fluorescent X-rays at every energy level to detect a variation of K-shell characteristic X-rays of the Sulfur component contained in the sample.
Claim 8
Dependent Claim
50 words
An apparatus for measuring the Sulfur component contained in oil according to claim 2, wherein: said detecting means comprises a measurement circuit for measuring an intensity of said fluorescent X-rays at every energy level to detect a variation of K-shell characteristic X-rays of the Sulfur component contained in the sample.
Claim 9
Dependent Claim
50 words
An apparatus for measuring the Sulfur component contained in oil according to claim 3, wherein: said detecting means comprises a measurement circuit for measuring an intensity of said fluorescent X-rays at every energy level to detect a variation of K-shell characteristic X-rays of the Sulfur component contained in the sample.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |