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US2762699A
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Process for the production of ammonium sulphate-nitrate
Assignee: Bergwerksgesellschaft Hibernia AG
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Filing: 1952-02-08
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Granted: 1956-09-11
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Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Steinle Walter
- 👤 Exner Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:33
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/18; C01C1/185; C05; C05C; C05C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306924A
Cited
US1315674A
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US1931768A
Cited
GB356759A
Cited
GB357396A
Cited
US1884105A
Cited
US2025915A
Cited
USRE21217E
Cited
US2551569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |