US2362276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiation of acidic minerals
Assignee: Wyeth Holdings LLC
•
Filing: 1942-03-31
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Granted: 1944-11-07
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Expires: 1962-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr David W Jayne
- 👤 Harold M Day
- 👤 Stephen E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:55
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D2203/00; B03D2203/02; Y; Y10; Y10S; Y10S209/00; Y10S209/902
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) | 1947-11-07 | 1948-05-08 | 1948-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-11-07 | 1952-05-08 | 1952-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-11-07 | 1956-05-08 | 1956-11-07 | $7700.00 | Window Closed / Lapsed |