Patent US3959516A successfully refreshed from Google Patents.
US3402292A
Expired / Lapsed
US
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Apparatus for x-ray analysis of a material having a specific filter in the primary x-ray beam path
Assignee: Individual
•
Filing: 1964-06-02
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Granted: 1968-09-17
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Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Baecklund Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:21
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN APPARATUS FOR CARRYING OUT X-RAY ANALYSIS OF A MATERIAL FOR THE PURPOSE OF DETERMINING THE PRESENCE AND CONCENTRATION OF AT LEAST ONE ELEMENT WHICH COMPRISES; (A) AN X-RAY TUBE FOR IRRADIATING SAID MATERIAL WITH PRIMARY X-RAYS; (B) MEANS FOR THE SPECTRAL DIVISION OF THE SECONDARY X-RADIATION EMITTED BY SAID MATERIAL; (C) A RADIATION SENSOR FOR MEASURING THE BAND OF WAVELENGTHS OF SECONDARY X-RADIATION INCLUDING THE WAVELENGTHS EMITTED BY SAID ELEMENT AND DIVIDED FROM SAID SECONDARY X-RADIATION EMITTED BY SAID MATERIAL BY SAID MEANS FOR SPECTRAL DIVISION; AND (D) AT LEAST ONE FILTER INTERPOSED IN THE PATH OF SAID PRIMARY X-RAYS BETWEEN SAID X-RAY TUBE AND SAID MATERIAL HAVING A HIGH ABSORPTIVITY FOR SAID BAND OF WAVELENGTHS OF SECONDARY X-RADIATION INCLUDING THE WAVELENGTHS EMITTED BY SAID ELEMENT AND LOW ABSORPTIVITY FOR WAVELENGTHS OF SAID PRIMARY X-RAYS WHICH INDUCE SAID SECONDARY X-RADIATION EMITTED BY SAID ELEMENT.
Claim 2
Independent Claim
145 words
AN APPARATUS FOR CARRYING OUT X-RAY ANALYSIS OF A MATERIAL FOR THE PURPOSE OF DETERMINING THE PRESENCE AND CONCENTRATION OF AT LEAST ONE ELEMENT WHICH COMPRISES; (A) AN X-RAY TUBE FOR IRRADIATING SAID MATERIAL WITH PRIMARY X-RAYS; (B) MEANS FOR THE SPECTRAL DIVISION OF THE SECONDARY X-RADIATION EMITTED BY SAID MATERIAL; (C) A RADIATION SENSOR FOR MEASURING THE BAND OF WAVELENGTHS OF SECONDARY X-RADIATION INCLUDING THE WAVELENGTHS EMITTED BY SAID ELEMENT AND DIVIDED FROM SAID SECONDARY X-RADIATION EMITTED BY SAID MATERIAL BY SAID MEANS FOR SPECTRAL DIVISION; AND (D) AT LEAST ONE FILTER INTERPOSED IN THE PATH OF SAID PRIMARY X-RAYS BETWEEN SAID X-RAY TUBE AND SAID MATERIAL HAVING A HIGH ABSORPTIVITY FOR SAID BAND OF WAVELENGTHS OF SECONDARY X-RADIATION INCLUDING THE WAVELENGTHS EMITTED BY SAID ELEMENT AND LOW ABSORPTIVITY FOR WAVELENGTHS OF SAID PRIMARY X-RAYS WHICH INDUCE SAID SECONDARY X-RADIATION EMITTED BY SAID ELEMENT.
References Cited (Backward Citations)
US3079499A
Cited
US3218458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |