US1023133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitric acid.
Assignee: General Chemical Corp
•
Filing: 1910-05-02
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Granted: 1912-04-16
•
Expires: 1930-05-02
Abstract
No abstract record available.
Inventors
- 👤 Fredrik W De Jahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:20
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/20; C01B21/38; C01B21/42
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) | 1915-04-16 | 1915-10-16 | 1916-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-04-16 | 1919-10-16 | 1920-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-04-16 | 1923-10-16 | 1924-04-16 | $7700.00 | Window Closed / Lapsed |