Patent US3424233A successfully refreshed from Google Patents.
Patent US2760077A successfully refreshed from Google Patents.
US2760077A
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Spiral x-ray image intensifier
Assignee: Westinghouse Electric Corp
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Filing: 1952-03-29
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Granted: 1956-08-21
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Expires: 1972-03-29
Abstract
No abstract record available.
Inventors
- 👤 Richard L Longini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J29/385; G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN X-RAY DIRECTION-FILTER COMPRISING A SUBSTANTIALLY SPIRAL RIBBON CONTAINING ATOMS OF HIGH ATOMIC WEIGHT, THE SPACES BETWEEN ITS TURNS CONTAINING CARBON PARTICLES BOUND WITH A SUBSTANCE HAVING NO ATOM OF ATOMIC WEIGHT SUBSTANTIALLY GREATHER THAN THAT OF CHLORINE, AND THE BROAD FACES OF SAID RIBBON RADIATING FROM A COMMON CENTER.
Claim 2
Dependent Claim
50 words
AN X-RAY DIRECTION-FILTER COMPRISING A SUBSTANTIALLY SPIRAL RIBBON CONTAINING ATOMS OF HIGH ATOMIC WEIGHT, THE SPACES BETWEEN ITS TURNS CONTAINING CARBON PARTICLES BOUND WITH A SUBSTANCE HAVING NO ATOM OF ATOMIC WEIGHT SUBSTANTIALLY GREATHER THAN THAT OF CHLORINE, AND THE BROAD FACES OF SAID RIBBON RADIATING FROM A COMMON CENTER.
References Cited (Backward Citations)
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |