US2573069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring strong alpha emitters
Assignee: Individual
•
Filing: 1945-05-22
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Granted: 1951-10-30
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Expires: 1965-05-22
Abstract
No abstract record available.
Inventors
- 👤 Emilio G Segre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:10
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/17; G01T1/178
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A DEVICE OF THE CHARACTER DESCRIBED HAVING IN COMBINATION, AN ALPHA PARTICLE EMITTING MATERIAL, SAID MATERIAL BEING DISTRIBUTED IN A THIN LAYER OVER A SUBSTANTIAL AREA, A SECOND MATERIAL CAPABLE OF EMITTING NEUTRONS UPON BOMBARDMENT BY ALPHA PARTICLES FROM SAID FIRST MATERIAL, SAID SECOND MATERIAL BEING OF PLANIFORM CONFIGURATION, THE AREA THEREOF CORRESPONDING GENERALLY TO THE AREA OF SAID FIRST MENTIONED MATERIAL, AND DISPOSED IN SPACED RELATION TO SAID FIRST MATERIAL WITHIN THE EFFECTIVE RANGE OF ALPHA PARTICLES EMITTED THEREFROM, AND A THIRD MATERIAL CAPABLE OF BECOMING RADIOACTIVELY EXCITED UPON BOMBARDMENT BY NEUTRONS EMITTED FROM SAID SECOND MATERIAL, SAID THIRD MATERIAL BEING OR PLANIFORM CONFIGURATION AND OF AREA CORRESPONDING TO THE AREA OF SAID FIRST AND SECOND MATERIALS AND SUPPORTED IN SPACED RELATION THEREWITH BEYOND THE EFFECTIVE RANGE OF ALPHA PARTICLES FROM SAID FIRST MATERIAL AND WITHIN THE EFFECTIVE RANGE OF NEUTRONS FROM SAID SECOND MATERIAL.
Claim 2
Independent Claim
146 words
A DEVICE OF THE CHARACTER DESCRIBED HAVING IN COMBINATION, AN ALPHA PARTICLE EMITTING MATERIAL, SAID MATERIAL BEING DISTRIBUTED IN A THIN LAYER OVER A SUBSTANTIAL AREA, A SECOND MATERIAL CAPABLE OF EMITTING NEUTRONS UPON BOMBARDMENT BY ALPHA PARTICLES FROM SAID FIRST MATERIAL, SAID SECOND MATERIAL BEING OF PLANIFORM CONFIGURATION, THE AREA THEREOF CORRESPONDING GENERALLY TO THE AREA OF SAID FIRST MENTIONED MATERIAL, AND DISPOSED IN SPACED RELATION TO SAID FIRST MATERIAL WITHIN THE EFFECTIVE RANGE OF ALPHA PARTICLES EMITTED THEREFROM, AND A THIRD MATERIAL CAPABLE OF BECOMING RADIOACTIVELY EXCITED UPON BOMBARDMENT BY NEUTRONS EMITTED FROM SAID SECOND MATERIAL, SAID THIRD MATERIAL BEING OR PLANIFORM CONFIGURATION AND OF AREA CORRESPONDING TO THE AREA OF SAID FIRST AND SECOND MATERIALS AND SUPPORTED IN SPACED RELATION THEREWITH BEYOND THE EFFECTIVE RANGE OF ALPHA PARTICLES FROM SAID FIRST MATERIAL AND WITHIN THE EFFECTIVE RANGE OF NEUTRONS FROM SAID SECOND MATERIAL.
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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |