US2631102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monocalcium phosphate leavening composition and method of producing same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-06-01
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Granted: 1953-03-10
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Expires: 1971-06-01
Abstract
No abstract record available.
Inventors
- 👤 Findley E Hubbard
- 👤 Joe S Metcalf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
A; A21; A21D; A21D2/00; A21D2/02; C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/32; C01B25/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF PRODUCING A SLOW-ACTING MONOCALCIUM PHOSPHATE, WHICH COMPRISES REACTING LIME WITH PHOSPHORIC ACID UNDER CONDITIONS YIELDING ANHYDROUS MONOCALCIUM PHOSPHATE, APPLYING TO SAID ANHYDROUS PRODUCT A HOT AQUEOUS SOLUTION OF MONO-ALUMINUM ORTHOPHOSPHATE, REACTING WITH SAID COATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDROXIDES OF CALCIUM, MAGNESIUM AND ALUMINUM TO FORM A COMPLEX ALUMINUM PHOSPHATE JACKET CORRESPONDING IN COMPOSITION TO A PRODUCT CONSISTING ESSENTIALLY OF DIALUMINUM ORTHOPHOSPHATE AND A METALLIC HYDROGEN ORTHOPHOSPHATE CORRESPONDING TO THE METALS OF SAID GROUP, AND HEATING SAID JACKETED PRODUCT AT A TEMPERATURE SUFFICIENT TO CONVERT SAID DIALUMINUM ORTHOPHOSPHATE TO TETRA-ALUMINUM PYROPHOSPHATE BUT INSUFFICIENT TO EFFECT SUBSTANTIAL CONVERSION OF SAID MONOCALCIUM PHOSPHATE TO THE PYROPHOSPHATE STAGE, SAID CONVERSION BEING EFFECTED IN THE PRESENCE OF SAID 3% TO ABOUT 30% BY VOLUME OF WATER VAPOR.
Claim 2
Independent Claim
133 words
THE METHOD OF PRODUCING A SLOW-ACTING MONOCALCIUM PHOSPHATE, WHICH COMPRISES REACTING LIME WITH PHOSPHORIC ACID UNDER CONDITIONS YIELDING ANHYDROUS MONOCALCIUM PHOSPHATE, APPLYING TO SAID ANHYDROUS PRODUCT A HOT AQUEOUS SOLUTION OF MONO-ALUMINUM ORTHOPHOSPHATE, REACTING WITH SAID COATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE OXIDES AND HYDROXIDES OF CALCIUM, MAGNESIUM AND ALUMINUM TO FORM A COMPLEX ALUMINUM PHOSPHATE JACKET CORRESPONDING IN COMPOSITION TO A PRODUCT CONSISTING ESSENTIALLY OF DIALUMINUM ORTHOPHOSPHATE AND A METALLIC HYDROGEN ORTHOPHOSPHATE CORRESPONDING TO THE METALS OF SAID GROUP, AND HEATING SAID JACKETED PRODUCT AT A TEMPERATURE SUFFICIENT TO CONVERT SAID DIALUMINUM ORTHOPHOSPHATE TO TETRA-ALUMINUM PYROPHOSPHATE BUT INSUFFICIENT TO EFFECT SUBSTANTIAL CONVERSION OF SAID MONOCALCIUM PHOSPHATE TO THE PYROPHOSPHATE STAGE, SAID CONVERSION BEING EFFECTED IN THE PRESENCE OF SAID 3% TO ABOUT 30% BY VOLUME OF WATER VAPOR.
References Cited (Backward Citations)
US2297630A
Cited
US2291608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |