US3341340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized clay dispersions
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1966-01-06
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Granted: 1967-09-12
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Expires: 1986-01-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar W Sawyer
- 👤 Jr Walter L Haden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:12
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; D21H19/44; D21H19/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A MINERAL COMPOSITION IN THE FORM OF A FLOWABLE DISPERSED AQUEOUS SLURRY AND COMPRISING WATER, FINELY DIVIDED KAOLIN CLAY, AND ALKALI METAL SALT OF A CONDENSED PHOSPHATE IN DISPERSANT-EFFECTIVE QUANTITY AND AN ALKALI METAL SALT OF AMINO TRIMETHYL PHOSPHONIC ACID IN AMOUNT SUFFICIENT TO LENGTHEN THE TIME SPAN DURING WHICH SAID SLURRY REMAINS FLUID WHEN MAINTAINED T A TEMPERATURE WITHIN THE RANGE OF 70*F. TO 130*F.
Claim 2
Dependent Claim
66 words
A MINERAL COMPOSITION IN THE FORM OF A FLOWABLE DISPERSED AQUEOUS SLURRY AND COMPRISING WATER, FINELY DIVIDED KAOLIN CLAY, AND ALKALI METAL SALT OF A CONDENSED PHOSPHATE IN DISPERSANT-EFFECTIVE QUANTITY AND AN ALKALI METAL SALT OF AMINO TRIMETHYL PHOSPHONIC ACID IN AMOUNT SUFFICIENT TO LENGTHEN THE TIME SPAN DURING WHICH SAID SLURRY REMAINS FLUID WHEN MAINTAINED T A TEMPERATURE WITHIN THE RANGE OF 70*F. TO 130*F.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |