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US1505281A
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US
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Process for the manufacture of steel and the fixation of nitrogen
Assignee: JNC Corp
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Filing: 1921-05-25
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Granted: 1924-08-19
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Expires: 1941-05-25
Abstract
No abstract record available.
Inventors
- 👤 Nagelvoort Adriaan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:12
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-08-19 | 1928-02-18 | 1928-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-08-19 | 1932-02-18 | 1932-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-08-19 | 1936-02-18 | 1936-08-19 | $7700.00 | Window Closed / Lapsed |