US2820146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intensifying screens
Assignee: EIDP Inc
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Filing: 1955-02-18
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Granted: 1958-01-14
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Expires: 1975-02-18
Abstract
No abstract record available.
Inventors
- 👤 Arnold R Kunes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A VARIABLE-SPEED X-RAY INTENSIFYING SCREEN COMPRISING A SUPPORT BEARING IN ORDER A REFLECTIVE-FILTER LAYER COMPRISING FINELY DIVIDED INERT WHITE PIGMENT PARTICLES AND A DYE UNIFORMLY DISPERSED THROUGH A HARD-FORMING POLYMERIC BINDING AGENT, SAID LAYER BEING OF UNIFORMLY VARYING THICKNESS IN A MAJOR PART OF ITS DIMENSION ALONG ONE AXIS AND OF UNIFORM THICKNESS IN INCREMENTAL COPLANAR PORTIONS ALONG A PERPENDICULAR AXIS, A COMPLEMENTARY FLUORESCENT LAYER OF INVERSELY VARYING THICKNESS COMPRISING FINELY DIVIDED DISCRETE PHOSPHOR PARTICLES UNIFORMLY DISTRIBUTED THROUGHOUT A HARD FILM-FORMING BINDING AGENT AND A PROTECTIVE LAYER COMPOSED OF SUCH A BINDING AGENT.
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) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |