US2850642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear spectroscopy without compton background
Assignee: California Research LLC
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Filing: 1954-10-07
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Granted: 1958-09-02
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Expires: 1974-10-07
Abstract
No abstract record available.
Inventors
- 👤 Delmar O Seevers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/08; G01V5/10; G01V5/101
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
151 words
WELL LOGGING APPARATUS FOR DECTING TRANSMITTING A SPECTUM OF GAMMA RAY ENERGIES TO A SURFACE RECORDING STYSTEM COMPRISING AT LEAST A PAIR OF SCINITILLATION CRYSTALS ADAPTED TO INTERACT WTH GRAMMA RAYS TO PRODUCE A TOTAL NUMBER OF LIGHT QUANTA PROPORTIONAL TO THE ENERGY EACH GAMMA RAY SURRENDERS IN ONE O F SAID CRYSTALS, ONE OF SAID CRYSTALS BEING PRIMARILY ADAPTED TO INTERACT WITH GAMMA RAYS BY THE COMPTON SCATTERING EFFECT AND ANOTHER OF SAID CRYSTALS BENG PRIMARLY RESPONSIVE TO A COMBINATION OF INTERACTIONS WITH GRAMMA RAYS INCLUDING COMPTON SCATTERING, PHOTOELECTRIC AND PAIR-PRODUCTION EFFECTS, MEANS FOR CONVERTING SAID TOTAL NUMBER OF LIGHT PHOTONS TO AN ELECTRCAL PULSE OF CORRESPONDING MAGNITUDE, SAID CONVERTING MEANS INCLUDING MEANS FOR GENERATING AN ELECTROSTATIC CHARGE POSITIONABLE ON AN ELECTROSTATIC STORAGE SURFACE IN ACCORDANCE WITH THE MAGNITUDE OF SAID PULSE, MEANS FOR POSITIONING SAID ELECTROSTATIC CHARGE GENERATED BY INTERACTION IN ONE OF SAID CRYSTALS ON A FIRST PREDER-
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |