Patent US2819161A successfully refreshed from Google Patents.
US2819161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinnerettes and method of production
Assignee: Individual
•
Filing: 1954-11-24
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Granted: 1958-01-07
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Expires: 1974-11-24
Abstract
No abstract record available.
Inventors
- 👤 Ii John A Cupler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:57
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; C22C38/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A SPINNERETTE COMPOSED OF A VACUUM MELTED AUSTENITIC ALLOY CONTAINING 16 TO 29% CHROMIUM, 2 1/2 TO 9% MOLYBDENUM, LESS THAN 0.05% CARBON, 8 TO 20% OF AN ELEMENT RENDERING THE ALLOY AUSTENITIC, AND THE REMAINDER SUBSTANTIALLY IRON.
Claim 2
Dependent Claim
38 words
A SPINNERETTE COMPOSED OF A VACUUM MELTED AUSTENITIC ALLOY CONTAINING 16 TO 29% CHROMIUM, 2 1/2 TO 9% MOLYBDENUM, LESS THAN 0.05% CARBON, 8 TO 20% OF AN ELEMENT RENDERING THE ALLOY AUSTENITIC, AND THE REMAINDER SUBSTANTIALLY IRON.
References Cited (Backward Citations)
US2544336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |