US3497330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction of iron from phosphoric acid
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1965-02-08
•
Granted: 1970-02-24
•
Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Avraham M Baniel
- 👤 Ruth Blumberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:05
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/237; C01B25/238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA672008A
Cited
US2847279A
Cited
US2880063A
Cited
US3072461A
Cited
SU148385A1
Cited
US3318661A
Cited
US3338674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |