US3102954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photomultiplier pulse shaping circuit
Assignee: Shell USA Inc
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Filing: 1959-12-08
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Granted: 1963-09-03
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Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Jasper E Richardson
- 👤 William R Orr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:23
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/208; H; H03; H03K; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN OUTPUT CIRCUIT FOR A PHOTOMULTIPLYING TUBE OF A SCINTILLATION TYPE RADIATION DETECTOR HAVING TWO PHOSPHORS WITH DIFFERENT DECAY TIMES COMPRISING: A FIRST CONDUCTIVE PATH FOR THE SIGNAL APPEARING ON A DYNODE OF THE PHOTOMULTIPHLIER TUBE, SAID FIRST CONDUCTIVE PATH INCLUDING A DELAY CIRCUIT MEANS FOR THE DYNODE SIGNAL; A SECOND CONDUCTIVE PATH FOR THE SIGNAL APPEARING ON THE ANODE OF THE PHOTOMULTIPLIER TUBE, SAID SECOND PATH INCLUDING A CIRCUIT HAVING BOTH A MEANS FOR REMOVING FROM SAID ANODE SIGNAL THE PORTION OF SAID SIGNAL RESULTING FROM THE PHOSPHOR HAVING THE SLOWEST DECAY TIME AND A RECTIFYING MEANS FOR CONVERTING THE REMAINING ANODE SIGNAL TO A UNIDIRECTIONAL SIGNAL OF OPPOSITE POLARITY TO THE DYNODE SIGNAL; AND CIRCUIT MEANS ALGBRAICALLY COMBINGING THE SIGNAL FROM SAID FIRST AND SECOND CONDUCTIVE PATHS.
Claim 2
Dependent Claim
129 words
AN OUTPUT CIRCUIT FOR A PHOTOMULTIPLYING TUBE OF A SCINTILLATION TYPE RADIATION DETECTOR HAVING TWO PHOSPHORS WITH DIFFERENT DECAY TIMES COMPRISING: A FIRST CONDUCTIVE PATH FOR THE SIGNAL APPEARING ON A DYNODE OF THE PHOTOMULTIPHLIER TUBE, SAID FIRST CONDUCTIVE PATH INCLUDING A DELAY CIRCUIT MEANS FOR THE DYNODE SIGNAL; A SECOND CONDUCTIVE PATH FOR THE SIGNAL APPEARING ON THE ANODE OF THE PHOTOMULTIPLIER TUBE, SAID SECOND PATH INCLUDING A CIRCUIT HAVING BOTH A MEANS FOR REMOVING FROM SAID ANODE SIGNAL THE PORTION OF SAID SIGNAL RESULTING FROM THE PHOSPHOR HAVING THE SLOWEST DECAY TIME AND A RECTIFYING MEANS FOR CONVERTING THE REMAINING ANODE SIGNAL TO A UNIDIRECTIONAL SIGNAL OF OPPOSITE POLARITY TO THE DYNODE SIGNAL; AND CIRCUIT MEANS ALGBRAICALLY COMBINGING THE SIGNAL FROM SAID FIRST AND SECOND CONDUCTIVE PATHS.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |