Patent US3369952A successfully refreshed from Google Patents.
Patent US2934503A successfully refreshed from Google Patents.
US2934503A
Expired / Lapsed
US
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Scale inhibiting composition
Assignee: California Research LLC
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Filing: 1953-04-29
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Granted: 1960-04-26
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Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Chittum
- 👤 Gilson H Rohrback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A SCALE INHIBITOR COMPRISING A DISPERSION OF 4 TO 12 PARTS BY WEIGHT OF A SODIUM POLYPHOSPHATE, 2 TO 7 PARTS BY WEIGHT OF A WATER-SOLUBLE ALKYL ARYL SULFONATE WETTING AGENT CONTAINING 6 TO 16 CARBON ATOMS IN THE ALKYL GROUP, 1.5 TO 8.5 PARTS BY WEIGHT OF AN OIL-SOLUBLE PETROLEUM SULFONATE DETERGENT HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 550 TO 700, AND 1 TO 6 PARTS BY WEIGHT OF A WATER-SOLUBLE NAPHTHENATE HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 250 TO 375 IN 100 PARTS BY WEIGHT OF THE MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER AND WATER CONTAINING UP TO 20% BY WEIGHT OF AN ALCOHOL CONTAINING FROM 1 TO 4 CARBON ATOMS PER MOLECULE.
Claim 2
Dependent Claim
123 words
A SCALE INHIBITOR COMPRISING A DISPERSION OF 4 TO 12 PARTS BY WEIGHT OF A SODIUM POLYPHOSPHATE, 2 TO 7 PARTS BY WEIGHT OF A WATER-SOLUBLE ALKYL ARYL SULFONATE WETTING AGENT CONTAINING 6 TO 16 CARBON ATOMS IN THE ALKYL GROUP, 1.5 TO 8.5 PARTS BY WEIGHT OF AN OIL-SOLUBLE PETROLEUM SULFONATE DETERGENT HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 550 TO 700, AND 1 TO 6 PARTS BY WEIGHT OF A WATER-SOLUBLE NAPHTHENATE HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 250 TO 375 IN 100 PARTS BY WEIGHT OF THE MATERIAL SELECTED FROM THE GROUP CONSISTING OF WATER AND WATER CONTAINING UP TO 20% BY WEIGHT OF AN ALCOHOL CONTAINING FROM 1 TO 4 CARBON ATOMS PER MOLECULE.
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |