US3127239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separation
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:40
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/06; C01F7/0646; C01F7/0653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
METHOD FOR THE SEPARATION OF TH ALKALI-INSOLUBLE CONSTITUENTS OF ALUMINOUS ORES OF THE BAUXITE TYPE FROM ALKALINE BAUXITE DIGESTION LIQUOR IN WHICH THEY ARE SUSPENDED WHICH COMPRISES ADDING TO THE SUSPENSION A FLOCCULANT COMPRISING A HOMGENIZED GELANTINIZED STARCH, SAID STARCH HAVING BEEN FIRST GELATINIZED AND THEN HOMOGENIZED BY MECHANICAL DISRUPTION OF THE STARCH STRUCTURE BY MEANS OF HIGH SPEED SHEARING AND TEARING STRESSES TO FORM A FINE AQUEOUS SUSPENSION OF SAID STARCH CORRESPONDING TO A STARCH LOADING BETWEEN ABOUT 3 AND BOUT 20 POUNDS PER TON OF INSOLUBLE CONSTITUENTS, AND THEN SEPARATING THE SEDIMENTED INSOLUBLE CONSTITUENTS FROM THE DIGESTION LIQUOR.
Claim 2
Dependent Claim
100 words
METHOD FOR THE SEPARATION OF TH ALKALI-INSOLUBLE CONSTITUENTS OF ALUMINOUS ORES OF THE BAUXITE TYPE FROM ALKALINE BAUXITE DIGESTION LIQUOR IN WHICH THEY ARE SUSPENDED WHICH COMPRISES ADDING TO THE SUSPENSION A FLOCCULANT COMPRISING A HOMGENIZED GELANTINIZED STARCH, SAID STARCH HAVING BEEN FIRST GELATINIZED AND THEN HOMOGENIZED BY MECHANICAL DISRUPTION OF THE STARCH STRUCTURE BY MEANS OF HIGH SPEED SHEARING AND TEARING STRESSES TO FORM A FINE AQUEOUS SUSPENSION OF SAID STARCH CORRESPONDING TO A STARCH LOADING BETWEEN ABOUT 3 AND BOUT 20 POUNDS PER TON OF INSOLUBLE CONSTITUENTS, AND THEN SEPARATING THE SEDIMENTED INSOLUBLE CONSTITUENTS FROM THE DIGESTION LIQUOR.
References Cited (Backward Citations)
US1979257A
Cited
US1947295A
Cited
US2105052A
Cited
GB481499A
Cited
GB522691A
Cited
US2280998A
Cited
US2417969A
Cited
US2468207A
Cited
US2635068A
Cited
US2935377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |