Patent US2561415A successfully refreshed from Google Patents.
US2561415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing ammonium phosphate
Assignee: Hall Labs LLC
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Filing: 1948-06-23
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Granted: 1951-07-24
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Expires: 1968-06-23
Abstract
No abstract record available.
Inventors
- 👤 Rice Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:00
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/28; C01B25/38; C01B25/40; C01B25/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A METHOF OF PRODUCING AMMONIUM METAPHOSPHATE AS A DRY FREE-FLOWING POWDER THAT CONSISTS IN SUPPLYING AIR CONTAINING MOISTURE AND ELEMENTAL PHOSPHORUS TO A COMBUSTION CHAMBER AT SUCH RATIOS RELATIVE TO EACH OTHER THAT THE PHOSPHORUS IS BURNED TO GASEOUS PHOSPHORUS PENTOXIDE AND SUPPLYING THE PHOSPHORUS AND AIR TO SAID COMBUSTION DEVELOPED IN SAID CHAMBER BY THE TEMPERATUE CHAMBER IN SAID CHAMBER BY SAID COMBUSTION IS ABOVE 600* F., INTRODUCING AMMONIA INTO THE PHOSPHORUS PENTOXIDE FORMED IN SAID CHAMBER AND THE WATER VAPOR MIXED THEREWITH IN SUCH AMOUNT THAT THE AMMONIA AND WATER VAPOR REACT WITH ALL THE GASEOUS PHOSPHORUS PENTOXIDE TO FORM AMMONIUM METAPHOSPHATE WHILE THE REACTANTS ARE IN THE GAS PHASE, CONTINUOUSLY DISCHARGING THE EXCESS AIR AND AMMONIUM METAPHOSPHATE SO FORMED INTO A FILTER, AND COOLING THE AMMONIUM METAPHOSPHATE AND
Claim 2
Dependent Claim
131 words
A METHOF OF PRODUCING AMMONIUM METAPHOSPHATE AS A DRY FREE-FLOWING POWDER THAT CONSISTS IN SUPPLYING AIR CONTAINING MOISTURE AND ELEMENTAL PHOSPHORUS TO A COMBUSTION CHAMBER AT SUCH RATIOS RELATIVE TO EACH OTHER THAT THE PHOSPHORUS IS BURNED TO GASEOUS PHOSPHORUS PENTOXIDE AND SUPPLYING THE PHOSPHORUS AND AIR TO SAID COMBUSTION DEVELOPED IN SAID CHAMBER BY THE TEMPERATUE CHAMBER IN SAID CHAMBER BY SAID COMBUSTION IS ABOVE 600* F., INTRODUCING AMMONIA INTO THE PHOSPHORUS PENTOXIDE FORMED IN SAID CHAMBER AND THE WATER VAPOR MIXED THEREWITH IN SUCH AMOUNT THAT THE AMMONIA AND WATER VAPOR REACT WITH ALL THE GASEOUS PHOSPHORUS PENTOXIDE TO FORM AMMONIUM METAPHOSPHATE WHILE THE REACTANTS ARE IN THE GAS PHASE, CONTINUOUSLY DISCHARGING THE EXCESS AIR AND AMMONIUM METAPHOSPHATE SO FORMED INTO A FILTER, AND COOLING THE AMMONIUM METAPHOSPHATE AND
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) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |