Patent US1886580A successfully refreshed from Google Patents.
US1886580A
Expired / Lapsed
US
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Process of dehydrating glauber salt
Assignee: BARIUM REDUCTION Corp
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Filing: 1931-09-15
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Granted: 1932-11-08
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Expires: 1951-09-15
Abstract
No abstract record available.
Inventors
- 👤 Jr James B Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:17
CPC Classifications
C; C01; C01D; C01D5/00; C01D5/18
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) | 1935-11-08 | 1936-05-09 | 1936-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-08 | 1940-05-09 | 1940-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-08 | 1944-05-09 | 1944-11-08 | $7700.00 | Window Closed / Lapsed |