US4906850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiographic image detection device
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1988-05-20
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Granted: 1990-03-06
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Expires: 2008-05-20
Abstract
Abstract There is disclosed a radiographic image detection device comprised of a semiconductive matrix having rows and columns of radiation sensitive areas, a protective layer formed on the semiconductive matrix and having lands or land portions defined by grooves corresponding to areas between the rows and columns of the sensitive areas and crystals capable of adsorbing X-ray radiation disposed on the lands or land portions of the protective layer.
Inventors
- 👤 Meindert J. M. Beerlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:18
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/80; H10F39/805; G; G01; G01T; G01T1/00; G01T1/29; G01T1/2914; G01T1/2921; G01T1/2928; G01T1/16; G01T1/20; G01T1/2018; H10F39/10; H10F39/12; H10F39/18; H10F39/189; H10F39/1892; H10F77/00; H10F77/30; H10F77/306; H10F77/40; H10F77/496
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
A radiographic image detection device, which comprises: a semiconductive matrix having rows and columns of radiation sensitive areas; a protective layer formed on a surface of said semiconductive matrix of lands portions defined by grooves corresponding to areas between said rows and columns of said radiation sensitive areas; and crystals capable of adsorbing X-ray radiation disposed on said lands portions of said protective layer.
Claim 2
Dependent Claim
64 words
A radiographic image detection device, which comprises: a semiconductive matrix having rows and columns of radiation sensitive areas; a protective layer formed on a surface of said semiconductive matrix of lands portions defined by grooves corresponding to areas between said rows and columns of said radiation sensitive areas; and crystals capable of adsorbing X-ray radiation disposed on said lands portions of said protective layer.
Claim 3
Dependent Claim
22 words
The radiographic image detection device as defined in claim 1 wherein said protective layer is formed of Si -3 N 4 .
Claim 4
Dependent Claim
27 words
The radiographic image detection device defined in claim 1 or 2 wherein said grooves are of a width and depth of from 10 to 20 μm .
Claim 5
Dependent Claim
23 words
The radiographic image detection device as defined in claim 3 wherein said said crystals capable of adsorbing X-ray radiation are of cesium iodide.
Claim 6
Dependent Claim
21 words
The radiographic image detection device as defined in claim 4 wherein said crystals of cesium iodide are formed by vapor deposition.
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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |