Patent US2322298A successfully refreshed from Google Patents.
US3579022A
Expired / Lapsed
US
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Rotary anode for x-ray tube
Assignee: Schwarzkopf Technologies Corp
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Filing: 1968-08-16
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Granted: 1971-05-18
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Expires: 1988-08-16
Abstract
Abstract A rotary anode for an X-ray tube, the anode body consisting essentially of graphite, and having a target layer bonded thereto consisting essentially of a tungsten-rhenium alloy; in an alternate embodiment, to improve the bonding between the target layer and the anode body, a thin stratum consisting essentially of rhenium is interposed between the anode body and the tungstenrhenium target layer; AND PROCESSES OF UNITING THE TARGET LAYER TO THE ANODE BODY, INCLUDING DEPOSITING THE TUNGSTEN AND RHENIUM LAYER ON THE ANODE BODY OUT OF A GAS PHASE, AND DEPOSITING THE INTERMEDIATE RHENIUM LAYER BETWEEN THE TARGET LAYER AND THE ANODE BODY OUT OF A GAS PHASE.
Inventors
- 👤 Walter Hennig
- 👤 Karl Sedlatschek
- 👤 Rudolf Machenschalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:35
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/108; H01J2235/00; H01J2235/08; H01J2235/083; H01J2235/084
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
In the X-ray tube of claim 1, the improvement in which said tungsten-rhenium alloy contains by weight, rhenium in the range of 5-25 percent.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |