Patent US2740900A successfully refreshed from Google Patents.
US2740900A
Expired / Lapsed
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Radiation detector
Assignee: Texaco Development Corp
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Filing: 1952-08-22
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Granted: 1956-04-03
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Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Ruble
- 👤 Arthur L Tirico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:33
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
RADIATION DETECTION APPARATUS COMPRISING A MEMBRANEOUS, SECONDARY-EMITTER ELEMENT HAVING TWO OPPOSITELY-FACING EXPOSED SURFACES WHICH IS ADAPTED TO EMIT LOW ENERGY ELECTRONS FROM ONE OF SAID SURFACES IN RESPONSE TO BOMBARDMENT OF ITS OPPOSITE SURFACE WITH HIGHENERGY CHARGED-PARTICLES, MEANS RESPONSIVE TO PENETRATIVE RADIATION TO BOMBARD SAID OPPOSITE SURFACES OF SAID ELEMENT WITH HIGH-ENERGY CHARGED-PARTICLES, A CASCADE OF
Claim 2
Dependent Claim
56 words
RADIATION DETECTION APPARATUS COMPRISING A MEMBRANEOUS, SECONDARY-EMITTER ELEMENT HAVING TWO OPPOSITELY-FACING EXPOSED SURFACES WHICH IS ADAPTED TO EMIT LOW ENERGY ELECTRONS FROM ONE OF SAID SURFACES IN RESPONSE TO BOMBARDMENT OF ITS OPPOSITE SURFACE WITH HIGHENERGY CHARGED-PARTICLES, MEANS RESPONSIVE TO PENETRATIVE RADIATION TO BOMBARD SAID OPPOSITE SURFACES OF SAID ELEMENT WITH HIGH-ENERGY CHARGED-PARTICLES, A CASCADE OF
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |