US2952775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the analytical determination of deuterium
Assignee: Shell USA Inc
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Filing: 1959-02-17
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Granted: 1960-09-13
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Expires: 1979-02-17
Abstract
No abstract record available.
Inventors
- 👤 Vincent P Guinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:26
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/221; G01N23/222; G01N2223/00; G01N2223/01; G01N2223/07; G01N2223/074; G01N2223/10; G01N2223/101; G01N2223/1016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
APPARATUS FOR THE DETERMINATION OF DEUTERIUM IN SAMPLES CONTAINING THE SAME, WHICH COMPRISES A COMBINATION OF AN ELECTRON SOURCE OF SUFFICIENT ENERGY TO GENERATE AT A TARGET X-RAYS HAVING A FLUX WITH AN ENERGY LEVEL ABOVE 2.23 MEV., A FIRST CELL CONTAINING THE SAMPLE TO BE ABALYZED REPRODUCIBLY POSITIONED IN THE PATH OF X-RAY GENERATED AT SAID TARGET, A SECOND CELL CONTAINING A NEUTRON ACCEPTOR MATERIAL, ONE OF SAID CELLS SUBSTANTAILLY SURROUNDING THE OTHER IN A PLANE APPROXIMATELY NORMAL TO SAID X-RAYS, A THIRD CELL SHIELDED BY A MATERIAL HAVING A HIGH ABSORPTIVE CROSS-SECTION TO PRECENT SUBSTANTIAL PASSAGE OF NEUTRONS IN AND OUT OF SAID CELL BUT PREVIOUS TO X-RAYS OF THE ENERGY LEVEL INDICATED, SAID THRID CELL BEING PLACED IN LINE WITH THE TARGET SOURCE OF SAID X-RAYS AND SAID FIRST CELL IN A REPRODUCIBLE POSITION AND CONTAINING IN ADDITION TO A NEUTRON ACCEPTOR MATERIAL A SMALL AMOUNT OF DEUTERIUM, AND MEANS FOR QUANTITATIVELY MEASURING THE RADIOCATIVITY OF SAID SECOND AND THIRD CELLS AFTER A PERIOD OF IRRADIATION BY X-RAYS OF THE ENERGY LEVEL INDICATED.
Claim 2
Dependent Claim
176 words
APPARATUS FOR THE DETERMINATION OF DEUTERIUM IN SAMPLES CONTAINING THE SAME, WHICH COMPRISES A COMBINATION OF AN ELECTRON SOURCE OF SUFFICIENT ENERGY TO GENERATE AT A TARGET X-RAYS HAVING A FLUX WITH AN ENERGY LEVEL ABOVE 2.23 MEV., A FIRST CELL CONTAINING THE SAMPLE TO BE ABALYZED REPRODUCIBLY POSITIONED IN THE PATH OF X-RAY GENERATED AT SAID TARGET, A SECOND CELL CONTAINING A NEUTRON ACCEPTOR MATERIAL, ONE OF SAID CELLS SUBSTANTAILLY SURROUNDING THE OTHER IN A PLANE APPROXIMATELY NORMAL TO SAID X-RAYS, A THIRD CELL SHIELDED BY A MATERIAL HAVING A HIGH ABSORPTIVE CROSS-SECTION TO PRECENT SUBSTANTIAL PASSAGE OF NEUTRONS IN AND OUT OF SAID CELL BUT PREVIOUS TO X-RAYS OF THE ENERGY LEVEL INDICATED, SAID THRID CELL BEING PLACED IN LINE WITH THE TARGET SOURCE OF SAID X-RAYS AND SAID FIRST CELL IN A REPRODUCIBLE POSITION AND CONTAINING IN ADDITION TO A NEUTRON ACCEPTOR MATERIAL A SMALL AMOUNT OF DEUTERIUM, AND MEANS FOR QUANTITATIVELY MEASURING THE RADIOCATIVITY OF SAID SECOND AND THIRD CELLS AFTER A PERIOD OF IRRADIATION BY X-RAYS OF THE ENERGY LEVEL INDICATED.
References Cited (Backward Citations)
US2161985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |