US2724779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counters for discriminating between gamma rays of different energies
Assignee: Texaco Inc
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Filing: 1950-12-12
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Granted: 1955-11-22
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Expires: 1970-12-12
Abstract
No abstract record available.
Inventors
- 👤 Alexander S Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF MEASURING THE INTENSITY OF HIGH ENERGY GAMMA RAYS WHILE DISCRIMINATING AGAINST GAMMA RAYS OF LOW ENERGY WHICH COMPRISES CAUSING GAMMA RAYS OF BOTH ENERGIES TO STRIKE A HIGH ATOMIC NUMBER METAL USED AS THE CATHODE OF A GAMMA RAY DETECTOR OF THE ELECTRICAL PULSE-PRODUCING TYPE SO THAT ELECTRONS WILL BE EJECTED FROM SAID METAL TO PRODUCE IONIZATION OF THE SURROUNDING GAS, AND ABSORBING THE WEAK ELECTRONS EJECTED WITHIN SAID METAL BY THE LOW ENERGY GAMMA RAYS SO THAT THEY WILL NOT REACH AND PRODUCE IONIZATION OF THE SURROUNDING GAS BY INTERPOSING BETWEEN SAID HIGH ATOMIC NUMBER METAL AND SAID GAS A LAYER OF LOW ATOMIC NUMBER METAL, SAID LAYER OF SAID LOW ATOMIC NUMBER METAL BEING READILY PENETRABLE BY THE STRONGER ELECTRONS PRODUCED IN THE HIGH ATOMIC NUMBER METAL BY THE ACTION OF THE GAMMA RAYS OF HIGH ENERGY.
Claim 2
Independent Claim
142 words
A METHOD OF MEASURING THE INTENSITY OF HIGH ENERGY GAMMA RAYS WHILE DISCRIMINATING AGAINST GAMMA RAYS OF LOW ENERGY WHICH COMPRISES CAUSING GAMMA RAYS OF BOTH ENERGIES TO STRIKE A HIGH ATOMIC NUMBER METAL USED AS THE CATHODE OF A GAMMA RAY DETECTOR OF THE ELECTRICAL PULSE-PRODUCING TYPE SO THAT ELECTRONS WILL BE EJECTED FROM SAID METAL TO PRODUCE IONIZATION OF THE SURROUNDING GAS, AND ABSORBING THE WEAK ELECTRONS EJECTED WITHIN SAID METAL BY THE LOW ENERGY GAMMA RAYS SO THAT THEY WILL NOT REACH AND PRODUCE IONIZATION OF THE SURROUNDING GAS BY INTERPOSING BETWEEN SAID HIGH ATOMIC NUMBER METAL AND SAID GAS A LAYER OF LOW ATOMIC NUMBER METAL, SAID LAYER OF SAID LOW ATOMIC NUMBER METAL BEING READILY PENETRABLE BY THE STRONGER ELECTRONS PRODUCED IN THE HIGH ATOMIC NUMBER METAL BY THE ACTION OF THE GAMMA RAYS OF HIGH ENERGY.
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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |