US3737699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube having anode target layer of molybdenum rhenium alloy
Assignee: Philips Nuclear Medicine Inc
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Filing: 1972-05-18
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Granted: 1973-06-05
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Expires: 1992-05-18
Abstract
Abstract An x-ray tube is described which includes a rotary anode having a target layer of molybdenum rhenium alloy provided on a base member of molybdenum. As a result of the improved target layer, the x-ray tube has a greatly increased useful life due to a lower reduction in x-ray radiation after multiple exposures at high thermal loading of the target.
Inventors
- 👤 R Gager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:38
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
19 words
An x-ray tube in accordance with claim 1 in which said alloy contains between 2 and 15 percent rhenium.
Claim 2
Dependent Claim
33 words
An x-ray tube in accordance with claim 1 in which said target portion is a target layer of molybdenum rhenium alloy on an anode base member of a different metal than said layer.
Claim 3
Dependent Claim
18 words
An x-ray tube in accordance with claim 3 in which the anode base member is made of molybdenum.
Claim 4
Dependent Claim
16 words
An x-ray tube in accordance with claim 1 in which the anode is mounted for rotation.
Claim 5
Dependent Claim
21 words
An x-ray tube in accordance with claim 4 in which said target layer has a thickness greater than about 0.03 inch.
Claim 6
Dependent Claim
32 words
An x-ray anode in which the improvement comprises: an anode member having a target portion which emits x-rays when bombarded by electrons, said target portion being made of a molybdenum rhenium alloy.
Claim 7
Dependent Claim
32 words
An anode in accordance with claim 7 in which said target portion is a target layer of molybdenum rhenium alloy on an anode base member of a different metal than said layer.
Claim 8
Dependent Claim
16 words
An anode in accordance with claim 8 in which the base member is made of molybdenum.
Claim 9
Dependent Claim
18 words
An anode in accordance with claim 7 in which said alloy contains between 2 and 15 percent rhenium.
References Cited (Backward Citations)
US3397338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |