US3059772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic separation in non-uniform field
Assignee: International Minerals and Chemical Corp
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Filing: 1960-09-28
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Granted: 1962-10-23
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Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Baron Ira Milton Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
B; B03; B03C; B03C7/00; B03C7/02; B03C7/023; B03C7/12
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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |