Patent US2021616A successfully refreshed from Google Patents.
US2021616A
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Method and apparatus for introducing reagents into liquid suspensions
Assignee: Occidental Chemical Corp
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Filing: 1934-11-09
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Granted: 1935-11-19
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Expires: 1954-11-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/10; D21C9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/86212; Y10T137/87571; Y10T137/87587; Y10T137/87595; Y10T137/87603; Y10T137/9464
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) | 1938-11-18 | 1939-05-20 | 1939-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-18 | 1943-05-20 | 1943-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-18 | 1947-05-20 | 1947-11-19 | $7700.00 | Window Closed / Lapsed |