US3237009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for radiography with neutrons of thermal energies
Assignee: General Dynamics Corp
•
Filing: 1963-03-29
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Granted: 1966-02-22
•
Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Edward A Warman
- 👤 William D Welte
- 👤 Alfred T Garvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/02; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/09; Y; Y10; Y10S; Y10S430/00; Y10S430/154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A DEVICE FOR OBTAINING AN INSPECTION RADIOGRAPH OF A SPECIMEN BY MEANS OF NEUTRON RADIOGRAPHY COMPRISING: (1) A SUBSTANCE WHICH EMITS NEUTRONS WHEN GAMMA RAYS IMPINGE UPON IT; (2) A RADIOACTIVE ISOTOPE WHICH EMITS GAMMA RAYS OF SUFFICIENT ENERGY TO CAUSE SAID SUBSTANCE TO EMIT NEUTRONS; (3) MEANS FOR BRINGING SAID SUBSTANCE AND SAID ISOTOPE INTO PROXIMITY SUFFICIENT FOR GAMMA RAYS EMITTED BY SAID ISOTOPE TO CAUSE NEUTRONS TO BE EMITTEE BY SAID SUBSTANCE; (4) MODERATING MEANS DISPOSED BETWEEN THE SPECIMEN AND SAID SUBSTANCE FOR MODERATING THE NEUTRONS EMITTED BY SAID SUBSTANCE TO THERMAL ENERGIES; (5) COLLIMATING MEANS DISPOSED BETWEEN THE SPECIMEN AND SAID MODERATING MEANS FOR COLLIMATING THE NEUTRONS EMTTED BY SAID SUBSTANCE; AND (6) MEANS FOR DE-
Claim 2
Independent Claim
119 words
A DEVICE FOR OBTAINING AN INSPECTION RADIOGRAPH OF A SPECIMEN BY MEANS OF NEUTRON RADIOGRAPHY COMPRISING: (1) A SUBSTANCE WHICH EMITS NEUTRONS WHEN GAMMA RAYS IMPINGE UPON IT; (2) A RADIOACTIVE ISOTOPE WHICH EMITS GAMMA RAYS OF SUFFICIENT ENERGY TO CAUSE SAID SUBSTANCE TO EMIT NEUTRONS; (3) MEANS FOR BRINGING SAID SUBSTANCE AND SAID ISOTOPE INTO PROXIMITY SUFFICIENT FOR GAMMA RAYS EMITTED BY SAID ISOTOPE TO CAUSE NEUTRONS TO BE EMITTEE BY SAID SUBSTANCE; (4) MODERATING MEANS DISPOSED BETWEEN THE SPECIMEN AND SAID SUBSTANCE FOR MODERATING THE NEUTRONS EMITTED BY SAID SUBSTANCE TO THERMAL ENERGIES; (5) COLLIMATING MEANS DISPOSED BETWEEN THE SPECIMEN AND SAID MODERATING MEANS FOR COLLIMATING THE NEUTRONS EMTTED BY SAID SUBSTANCE; AND (6) MEANS FOR DE-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |