US1270093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making silicic acid or hydrated silica.
Assignee: General Electric Co
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Filing: 1917-08-23
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Granted: 1918-06-18
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Expires: 1937-08-23
Abstract
No abstract record available.
Inventors
- 👤 William C Arsem
- 👤 James G E Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:17
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01P; C01P2006/00; C01P2006/12
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) | 1921-06-17 | 1921-12-17 | 1922-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-06-17 | 1925-12-17 | 1926-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-06-17 | 1929-12-17 | 1930-06-18 | $7700.00 | Window Closed / Lapsed |