Patent US2316506A successfully refreshed from Google Patents.
US2697181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutron sensitive tube
Assignee: Individual
•
Filing: 1951-06-01
•
Granted: 1954-12-14
•
Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Sheldon Edward Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:07
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50; H01J31/506
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN ATOMIC-PARTICLES-SENSITIVE TUBES, AN EVACUATED ENVELOPE, HAVING IN COMBINATION, A COMPOSITE PHOTOCATHODE CONSISTING OF A FLUORESCENT LAYER HAVING DISTRIBUTED THROUGHOUT SAID LAYER ELEMENTS REACTIVE TO ATOMIC PARTICLES, A LIGHT TRANSPARENT SEPARATING LAYER, AND OF A PHOTOELECTRIC LAYER, SAID LIGHT TRANSPARENT LAYER OF A THICKNESS NOT EXCEEDING 0.15 MILLIMETER, ACCELERATING MEANS AND AN ELECTRON REACTIVE SCREEN SPACED APART FROM SAID PHOTOCATHODE.
Claim 2
Dependent Claim
60 words
IN ATOMIC-PARTICLES-SENSITIVE TUBES, AN EVACUATED ENVELOPE, HAVING IN COMBINATION, A COMPOSITE PHOTOCATHODE CONSISTING OF A FLUORESCENT LAYER HAVING DISTRIBUTED THROUGHOUT SAID LAYER ELEMENTS REACTIVE TO ATOMIC PARTICLES, A LIGHT TRANSPARENT SEPARATING LAYER, AND OF A PHOTOELECTRIC LAYER, SAID LIGHT TRANSPARENT LAYER OF A THICKNESS NOT EXCEEDING 0.15 MILLIMETER, ACCELERATING MEANS AND AN ELECTRON REACTIVE SCREEN SPACED APART FROM SAID PHOTOCATHODE.
References Cited (Backward Citations)
US2158853A
Cited
US2344042A
Cited
US2344043A
Cited
US2525832A
Cited
US2506018A
Cited
US2555423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |