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Patent US3511778A successfully refreshed from Google Patents.
US3511778A
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Process of clarifying solids water suspension
Assignee: TATABANYAI SZENBANYASZATI TROS
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Filing: 1968-02-06
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Granted: 1970-05-12
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Expires: 1988-02-06
Abstract
No abstract record available.
Inventors
- 👤 Oscar Libor
- 👤 Gyorgy Kollar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:28
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; C02F1/54
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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |