US2435304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering chromium values from ores
Assignee: COAST REDUCTION Inc
•
Filing: 1944-05-11
•
Granted: 1948-02-03
•
Expires: 1964-05-11
Abstract
No abstract record available.
Inventors
- 👤 Charles V Foerster
- 👤 Arthur T Cape
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:13
CPC Classifications
C; C22; C22B; C22B34/00; C22B34/30; C22B34/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324328A
Cited
GB189420168A
Cited
US725501A
Cited
US1760788A
Cited
US1914804A
Cited
US2199929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |