US2832710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for carburizing spinning nozzles composed of tantalum and alloys thereof
Assignee: WC Heraus GmbH and Co KG
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Filing: 1956-03-01
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Granted: 1958-04-29
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Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Ruthardt Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:21
CPC Classifications
C; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/20; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF MAKING SPINNING NOZZLES COMPRISING FORMING ORIFICES THROUGH A SPINNING BLANK COMPOSED OF METAL TAKEN FROM THE GROUP CONSISTING OF SUBSTANTIALLY PURE TANTALUM AND ALLOYS THEREOF WHEREIN THE TANTALUM CONSTITUTED A MAJOR PORTION OF THE ALLOY, AND THEREAFTER TREATING THE SPINNING NOZZLE WITH CARBONACEOUS GASES AT TEMPERATURES BETWEEN 700*C. AND 1500*C. AND PRESSURES OF 0.001 TO 100 MM. HG.
Claim 2
Independent Claim
61 words
A METHOD OF MAKING SPINNING NOZZLES COMPRISING FORMING ORIFICES THROUGH A SPINNING BLANK COMPOSED OF METAL TAKEN FROM THE GROUP CONSISTING OF SUBSTANTIALLY PURE TANTALUM AND ALLOYS THEREOF WHEREIN THE TANTALUM CONSTITUTED A MAJOR PORTION OF THE ALLOY, AND THEREAFTER TREATING THE SPINNING NOZZLE WITH CARBONACEOUS GASES AT TEMPERATURES BETWEEN 700*C. AND 1500*C. AND PRESSURES OF 0.001 TO 100 MM. HG.
References Cited (Backward Citations)
US896705A
Cited
US2170844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |