Patent US3928765A successfully refreshed from Google Patents.
US3928765A
Expired / Lapsed
US
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Determining composition of a substance by the use of both reflected and transmitted radiation
Assignee: ISOTOPCENRALEN
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Filing: 1973-11-19
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Granted: 1975-12-23
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Expires: 1993-11-19
Abstract
Abstract An apparatus for the determination of the content of sulphur in hydrocarbon fuels comprising a primary and a secondary source of gamma - or X-rays arranged on opposite sides of a test zone and a detector connected to a recording device for detecting and recording backscattered and transmitted rays emitted by the radiation sources.
Inventors
- 👤 Steen Teller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:59
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/083; G01N23/20; G01N23/203
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
Apparatus for the determination of the content of at least one chemical element in a medium by an electromagnetic radiation method by the detection of backscattered and transmitted radiation, the apparatus comprising: at least one first radiation source arranged on one side of a test zone; at least one detecting means including a recording means, said detecting means being arranged on the same side of the test zone as said first radiation source; and at least one second electromagnetic radiation source located at a side of said test zone opposite said detecting means; said detecting means being adapted to detect both radiation emitted from said first radiation source and backscattered in the test zone and radiation emitted from said second radiation source and transmitted through the test zone.
Claim 2
Dependent Claim
128 words
Apparatus for the determination of the content of at least one chemical element in a medium by an electromagnetic radiation method by the detection of backscattered and transmitted radiation, the apparatus comprising: at least one first radiation source arranged on one side of a test zone; at least one detecting means including a recording means, said detecting means being arranged on the same side of the test zone as said first radiation source; and at least one second electromagnetic radiation source located at a side of said test zone opposite said detecting means; said detecting means being adapted to detect both radiation emitted from said first radiation source and backscattered in the test zone and radiation emitted from said second radiation source and transmitted through the test zone.
Claim 3
Dependent Claim
17 words
An apparatus as in claim 1, wherein said second radiation source is a separate active radiation source.
Claim 4
Dependent Claim
24 words
An apparatus as in claim 1, wherein said second radiation source is a reflector capable of reflecting radiation emitted by said first radiation source.
Claim 5
Dependent Claim
28 words
An apparatus as in claim 1, wherein the energy of the radiation emitted from said first radiation source is different from that emitted by said second radiation source.
Claim 6
Dependent Claim
19 words
An apparatus as in claim 4, wherein said detecting means comprises means for discriminating between radiations of different energies.
Claim 7
Dependent Claim
29 words
An apparatus as in claim 1, wherein the radiation emitted by said first radiation source is gamma -radiation and the radiation emitted by said second radiation source is X-radiation.
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) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |