US958893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of hydrated sodium carbonate and sodium tannate.
Assignee: FRANKLIN CHEMICAL WORKS
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Filing: 1908-07-29
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Granted: 1910-05-24
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Expires: 1928-07-29
Abstract
No abstract record available.
Inventors
- 👤 William E Ridenour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:36
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/14
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) | 1913-05-23 | 1913-11-22 | 1914-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-05-23 | 1917-11-22 | 1918-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-05-23 | 1921-11-22 | 1922-05-24 | $7700.00 | Window Closed / Lapsed |