US3256434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactivity apparatus for indicating properties of materials
Assignee: Nuclear Chicago Corp
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Filing: 1963-11-20
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Granted: 1966-06-14
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Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Robert L Carver
- 👤 Shevick Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:23
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A NEUTRON SOURCE-AND-DETECTOR DEVICE FOR MEASUREMENT OF MOISTURE CONTENT AND ANALOGOUS PROPERTIES OF MATERIALS COMPRISING: (A) A FAST NEUTRON SOURCE, (B) AT LEAST TWO NEUTRON DETECTORS AT DIFFERING DISTANCES FROM THE SOURCE, (C) BOTH OF SAID NEUTROM DETECTORS HAVING RESPONSE CURVES VARYING IN THE SAME DIRECTION WITH VARIATION OF THE PROPERTY UNDER MEASUREMENT OVER AT LEAST A PORTION OF THE RANGE OF MEASUREMENT, (D) ONE OF SAID DETECTORS BEING SUFFICIENTLY CLOSE TO THE SOURCE TO PRODUCE A RESPONSE CURVE CONCAVE UPWARDLY AND THE OTHER BEING SUFFICIENTLY FAR FROM THE SOURCE
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |