US3542507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of tin from tin bearing solutions
Assignee: General Mills Inc
•
Filing: 1967-12-01
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Granted: 1970-11-24
•
Expires: 1987-12-01
Abstract
No abstract record available.
Inventors
- 👤 Jerome J Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/92; C; C01; C01G; C01G19/00; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |