Patent US2957750A successfully refreshed from Google Patents.
US2957750A
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Dehydrated sodium aluminum phosphate composition and method of producing same
Assignee: Victor Chemical Works
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Filing: 1957-05-16
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Granted: 1960-10-25
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Expires: 1977-05-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Knox
- 👤 Julian E Blanch
- 👤 George P Carroll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:51
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/45
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
THE METHOD OF PRODUCING DEHYDRATED SODIUM ALUMINUM ORTHOPHOSPHATE WHICH COMPRISES HEATING SODIUM ALUMINUM ORTHOPHOSPHATE OF THE EMPIRICAL FORMULA NAAL3H14(PO4)3.4H2O AT ABOUT 80-200*C. UNTIL SUBSTANTIALLY 4 MOLES OF CRYSTAL WATER ARE REMOVED WITHOUT EFFECTING MOLECULAR DEHYDRATION TO PRODUCE A DEHYDRATED ORTHOPHOSPHATE PRODUCT HAVING 0 TO 1 MOLE OF CRYSTAL WATER, REARRANGED CRYSTAL LATTICE, HIGHER PROPORTION OF AVAILABLE ACIDITY, INCREASED INITIAL LEAVENING ACTION AND A HIGHER RATE OF SOLUBILITY IN WATER THAN HYDRATED SODIUM ALUMINUM ORTHOPHOSPHATE HAVING THE EMPIRICAL FORMULA NAAL2H14(PO4)4H2O.
References Cited (Backward Citations)
US2550490A
Cited
US2538867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |