US2448058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of sodium percarbonate
Assignee: B LA PORTE Ltd
•
Filing: 1944-07-11
•
Granted: 1948-08-31
•
Expires: 1964-07-11
Abstract
No abstract record available.
Inventors
- 👤 Slater Victor Wallace
- 👤 Wood William Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:09
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/10; C01B15/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1986672A
Cited
US1237128A
Cited
US1225832A
Cited
GB152366A
Cited
US1263258A
Cited
US1950320A
Cited
GB502319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |