Patent US3893847A successfully refreshed from Google Patents.
US3893847A
Expired / Lapsed
US
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Composition of matter and process
Assignee: Catoleum Pty Ltd
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Filing: 1971-07-19
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Granted: 1975-07-08
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Expires: 1991-07-19
Abstract
Abstract Agglomerates comprising a finely ground mineral and an effective amount of a high molecular weight substantially straight chain water soluble polymer and water and a process for using such a composition of matter in producing agglomerates having improved properties.
Inventors
- 👤 Arthur Percy Derrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:44
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/242; C22B1/244; C22B1/2406; C22B1/2413
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A PROCESS OF MANUFACTURING INDURATED AGGLOMERATES WHICH PROCESS COMPRISES MIXING A FINELY GROUND MINERAL IN THE SIZE RAGE FROM 10 TO 1,000 MICRONES WITH AN AQUEOUS SOLUTION OF FROM 0,001 TO 10 LBS. POLYMER PER TON OF SAID FINELY GROUND MINERAL, SAID POLYMER BEING A SUBSTANTIALLY STRAIGHT CHAIN WATER SOLUBLE POLYMER HAVING A MOLECULAR WEIGHT FROM 1,000,000 TO 20,000,000, TREATING THE RESULTANT MIXTURE TO FORM GREEN AGGLOMERATES AND INDURATING SAID GREEN AGGLOMERATES BY HEATING.
Claim 2
Dependent Claim
74 words
A PROCESS OF MANUFACTURING INDURATED AGGLOMERATES WHICH PROCESS COMPRISES MIXING A FINELY GROUND MINERAL IN THE SIZE RAGE FROM 10 TO 1,000 MICRONES WITH AN AQUEOUS SOLUTION OF FROM 0,001 TO 10 LBS. POLYMER PER TON OF SAID FINELY GROUND MINERAL, SAID POLYMER BEING A SUBSTANTIALLY STRAIGHT CHAIN WATER SOLUBLE POLYMER HAVING A MOLECULAR WEIGHT FROM 1,000,000 TO 20,000,000, TREATING THE RESULTANT MIXTURE TO FORM GREEN AGGLOMERATES AND INDURATING SAID GREEN AGGLOMERATES BY HEATING.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the polymer is dissolved in an aqueous solution of an inorganic salt before mixing with the finely ground mineral.
Claim 4
Dependent Claim
21 words
A process according to claim 2 wherein the concentration of polymer is from 0.0l to 1 percent w/w in sea water.
Claim 5
Dependent Claim
30 words
A process according to claim 3 wherein the concentration of polymer is from 0.05 to 0.5 percent w/w and the green agglomerates are made on an inclined rotating disc pelletizer.
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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |