Patent US2900266A successfully refreshed from Google Patents.
US2900266A
Expired / Lapsed
US
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Method of increasing fluidity of aqueous industrial mineral slurries
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-02-18
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Granted: 1959-08-18
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Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
C; C04; C04B; C04B7/00; C04B7/36; C04B7/38; C04B7/42; C04B7/421; C04B7/425; C04B22/00; C04B22/08; C04B22/16; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD OF TREATING AQUEOUS INDUSTRIAL MINERAL SLURRIES COMPRISING UNIFORMLY INCORPORATING FROM ABOUT 0.005 TO ABOUT 0.5 PERCENT WEIGHT OF THE SLURRY SOLIDS OF AN ALKALI METAL POLYPHOSPHATOSULFATE COMPOSITION, DEFINED BY THE FORMULA XM2O:YP2O5:ZSO3, WHEREIN M IS AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM, AND X, Y, AND Z ARE INTEGERS, WHEREIN THE RATIO OF X TO THE SUM OF Y PLUS Z IS AT LEAST ABOUT 0.4 BUT LESS THAN ONE, TO AN AQUEOUS MINERAL SLURRY, SELECTED FROM THE GROUP CONSISTING OF RAW CEMENT SLURRIES, CLAY SLURRIES, PIGMENT SUSPENSIONS, AND MINERAL-BASED PAPER-COATING COMPOSITIONS, WHEREBY A SUBSTANTIAL INCREASE IN THE FLUIDITY OF THE SAID SLURRY IS EFFECTED.
Claim 2
Independent Claim
112 words
A METHOD OF TREATING AQUEOUS INDUSTRIAL MINERAL SLURRIES COMPRISING UNIFORMLY INCORPORATING FROM ABOUT 0.005 TO ABOUT 0.5 PERCENT WEIGHT OF THE SLURRY SOLIDS OF AN ALKALI METAL POLYPHOSPHATOSULFATE COMPOSITION, DEFINED BY THE FORMULA XM2O:YP2O5:ZSO3, WHEREIN M IS AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM AND POTASSIUM, AND X, Y, AND Z ARE INTEGERS, WHEREIN THE RATIO OF X TO THE SUM OF Y PLUS Z IS AT LEAST ABOUT 0.4 BUT LESS THAN ONE, TO AN AQUEOUS MINERAL SLURRY, SELECTED FROM THE GROUP CONSISTING OF RAW CEMENT SLURRIES, CLAY SLURRIES, PIGMENT SUSPENSIONS, AND MINERAL-BASED PAPER-COATING COMPOSITIONS, WHEREBY A SUBSTANTIAL INCREASE IN THE FLUIDITY OF THE SAID SLURRY IS EFFECTED.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |