US3479284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of finely divided solids from liquid suspensions thereof
Assignee: Hercules LLC
•
Filing: 1967-03-30
•
Granted: 1969-11-18
•
Expires: 1987-03-30
Abstract
No abstract record available.
Inventors
- 👤 Ronald D Lees
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D1/008; B03D1/01; B03D2201/00; B03D2201/002; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |