US2671868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gamma ray detector
Assignee: Texaco Inc
•
Filing: 1950-04-11
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Granted: 1954-03-09
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Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Leon M Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:51
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A GAMMA RAY DETECTOR COMPRISING A SEALED HOUSING ADAPTED TO CONTAIN A GAS FILLING, A CATHODE DISPOSED IN SAID HOUSING FORMED AT LEAST ONE THIN METAL PLATE AND AN ANODE WIRE DISPOSED IN PROXIMITY TO SAID CATHODE SO AS TO PROVIDE FOR A CONCENTRATION OF AN ELECTRIC FIELD, SAID CATHODE PLATE BEING FORMED OF A SINTERED, COMPRESSED METAL POWDER SO THAT ITS SURFACE WILL BE ROUGH TO PRESENT A GREATER SURFACE AREA THAN A SMOOTH PLATE OF THE SAME DIMENSIONS.
Claim 2
Dependent Claim
80 words
A GAMMA RAY DETECTOR COMPRISING A SEALED HOUSING ADAPTED TO CONTAIN A GAS FILLING, A CATHODE DISPOSED IN SAID HOUSING FORMED AT LEAST ONE THIN METAL PLATE AND AN ANODE WIRE DISPOSED IN PROXIMITY TO SAID CATHODE SO AS TO PROVIDE FOR A CONCENTRATION OF AN ELECTRIC FIELD, SAID CATHODE PLATE BEING FORMED OF A SINTERED, COMPRESSED METAL POWDER SO THAT ITS SURFACE WILL BE ROUGH TO PRESENT A GREATER SURFACE AREA THAN A SMOOTH PLATE OF THE SAME DIMENSIONS.
References Cited (Backward Citations)
US1492464A
Cited
US2218076A
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US2367939A
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US2397661A
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US2512769A
Cited
US2486944A
Cited
US2437576A
Cited
US2473550A
Cited
US2543728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |