US3136907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticathodes for X-ray tubes
Assignee: Metallwerk Plansee AG
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Filing: 1961-01-05
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Granted: 1964-06-09
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Expires: 1981-01-05
Abstract
No abstract record available.
Inventors
- 👤 Kieffer Richard
- 👤 Sedlatschek Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:16
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN AN X-RAY TUBE, THE COMBINATION OF A MEALLIC ANODE HAVING AN EXPOSED TARGET AREA AND BEAM MEANS INCLUDING AN ELECTRON SOURCE FOR PRODUCING AN ELECTRON BEAM IMPINGING ON SAID EXPOSED TARGET AREA AND CAUSING SAID EXPOSED TARGBET AREA TO EMIT X-RAYS, A METAL LAYER OF SAID HAVING SAID EXPOSED TARGET AREA AND BEING AT LEAST ABOUT 1/18 OF AN INCH THICK CONSISTING ESSENTIALLY OF 10% TO 25% RHENIUM AND AS BALANCE OF A BASE METAL ALLOYED WITH SAID RHENIUM, SAID BASE METAL BEING SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, TUNGSTEN ALLOYED WITH UP TO 14% TANTALUM, TUNGSTEN ALLOYED WITH UP TO 14% NIOBIUM AND TUNGSTEN ALLOYED WITH UP TO 14% OF TANTALUM AND NIOBIUM.
Claim 2
Dependent Claim
116 words
IN AN X-RAY TUBE, THE COMBINATION OF A MEALLIC ANODE HAVING AN EXPOSED TARGET AREA AND BEAM MEANS INCLUDING AN ELECTRON SOURCE FOR PRODUCING AN ELECTRON BEAM IMPINGING ON SAID EXPOSED TARGET AREA AND CAUSING SAID EXPOSED TARGBET AREA TO EMIT X-RAYS, A METAL LAYER OF SAID HAVING SAID EXPOSED TARGET AREA AND BEING AT LEAST ABOUT 1/18 OF AN INCH THICK CONSISTING ESSENTIALLY OF 10% TO 25% RHENIUM AND AS BALANCE OF A BASE METAL ALLOYED WITH SAID RHENIUM, SAID BASE METAL BEING SELECTED FROM THE GROUP CONSISTING OF TUNGSTEN, TUNGSTEN ALLOYED WITH UP TO 14% TANTALUM, TUNGSTEN ALLOYED WITH UP TO 14% NIOBIUM AND TUNGSTEN ALLOYED WITH UP TO 14% OF TANTALUM AND NIOBIUM.
References Cited (Backward Citations)
US2863083A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |