US1930744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the simultaneous manufacture of dicalcium phosphate and of ammonium chloride
Assignee: Individual
•
Filing: 1932-06-28
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Granted: 1933-10-17
•
Expires: 1952-06-28
Abstract
No abstract record available.
Inventors
- 👤 Durepaire Louis
- 👤 Quanquin Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:24
CPC Classifications
C; C05; C05B; C05B11/00; C05B11/04; C05B11/12
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) | 1936-10-16 | 1937-04-17 | 1937-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-16 | 1941-04-17 | 1941-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-16 | 1945-04-17 | 1945-10-17 | $7700.00 | Window Closed / Lapsed |