US3020230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coagulation of dispersed solids
Assignee: Union Carbide Corp
•
Filing: 1957-10-28
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Granted: 1962-02-06
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Keith L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; C; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD OF COAGULATING A LIQUID SUSPENSION COMPRISING SILICA WHICH COMPRISES ADDING TO SAID LIQUID SUSPENSION A COAGULATING AMOUNT OF POLY(ETHYLENE OXIDE) WHICH HAS A REDUCED VISCOSITY OF AT LEAST 1.0 AS DETERMINED AT A CONCENTRATION OF 0.2 GRAM OF SAID POLY(ETHYLENE OXIDE) PER 100 MILLITERS OF ACETONITRILE AT 30*C.
Claim 2
Independent Claim
50 words
A METHOD OF COAGULATING A LIQUID SUSPENSION COMPRISING SILICA WHICH COMPRISES ADDING TO SAID LIQUID SUSPENSION A COAGULATING AMOUNT OF POLY(ETHYLENE OXIDE) WHICH HAS A REDUCED VISCOSITY OF AT LEAST 1.0 AS DETERMINED AT A CONCENTRATION OF 0.2 GRAM OF SAID POLY(ETHYLENE OXIDE) PER 100 MILLITERS OF ACETONITRILE AT 30*C.
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Cited
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Cited
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Cited
AT202957B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |