US3304157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the recovery of phosphoric acid from aqueous reaction mixtures produced by the decomposition of tricalcium phosphate with hydrochloric acid
Assignee: ISRAEL MINING IND FOR RES AND
•
Filing: 1962-08-13
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Granted: 1967-02-14
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Avraham M Baniel
- 👤 Blumberg Ruth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:16
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR THE RECOVERY OF PHOSPHORIC ACID, COMPRISING THE STEPS OF EXTRACTING PHOSPHORIC ACID BY MEANS OF AN ORGANIC SOLVENT FROM AN AQUEOUS REACTION MIXTURE PRODUCED BY THE DECOMPOSITION OF TRICALCIUM PHOSPHATE WITH HYDROCHLORIC ACID IN AN AQUEOUS REACTION SYSTEM, SAID EXTRACTANT SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF AMIDES OF THE FOLLOWING GENERAL FORMULAE
Claim 2
Dependent Claim
57 words
A PROCESS FOR THE RECOVERY OF PHOSPHORIC ACID, COMPRISING THE STEPS OF EXTRACTING PHOSPHORIC ACID BY MEANS OF AN ORGANIC SOLVENT FROM AN AQUEOUS REACTION MIXTURE PRODUCED BY THE DECOMPOSITION OF TRICALCIUM PHOSPHATE WITH HYDROCHLORIC ACID IN AN AQUEOUS REACTION SYSTEM, SAID EXTRACTANT SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF AMIDES OF THE FOLLOWING GENERAL FORMULAE
References Cited (Backward Citations)
US2880063A
Cited
US3072460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |