US2514010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery and purification of aconitic acid
Assignee: Morton Salt Co
•
Filing: 1947-06-09
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Granted: 1950-07-04
•
Expires: 1967-06-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard F Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:51
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE PROCESS OF RECOVERING SUBSTANTIALLY PURE ACONITIC ACID FROM ALKALINE EARTH ACONITATES WHICH COMPRISES, REACTING SAID ACONITATES AT AN ELEVATED TEMPERATURE WITH A SMALL EXCESS OF HYDROCHLORIC ACID IN THE PRESENCE OF A SUBSTANTIAL ADDED AMOUNT OF AN AQUEOUS SOLUTION OF ALKALINE EARTH CHLORIDES TO PRODUCE ACONITIC ACID DISSOLVED IN A SOLUTION OF ALKALINE EARTH CHLORIDES THE CONCENTRATION OF SAID AQUEOUS HYDROCHLORIC ACID AND THE AMOUNT AND CONCENTRATION OF SAID ADDED SOLUTION BEING SELECTED TO PRODUCE A RESULTING SOLUTION OF ALKALINE EARTH CHLORIDES HAVING A CONCENTRATION BETWEEN APPROXIMATELY 21 AND 35% AND CONTAINING DISSOLVED ACONITIC ACID, SEPARATING SAID HEATED SOLUTION FROM UNDISSOLVED MATERIAL, THEREAFTER COOLING SAID SOLUTION TO PRODUCE CRYSTALS OF ACONITIC ACID, SEPARATING SAID CRYSTALS FROM THE COOLED SOLUTION AND WASHING SAID CRYSTALS WITH AQUEOUS HYDROCHLORIC ACID TO REMOVE RESIDUAL ALKALINE EARTH CHLORIDE SOLUTION.
Claim 2
Dependent Claim
135 words
THE PROCESS OF RECOVERING SUBSTANTIALLY PURE ACONITIC ACID FROM ALKALINE EARTH ACONITATES WHICH COMPRISES, REACTING SAID ACONITATES AT AN ELEVATED TEMPERATURE WITH A SMALL EXCESS OF HYDROCHLORIC ACID IN THE PRESENCE OF A SUBSTANTIAL ADDED AMOUNT OF AN AQUEOUS SOLUTION OF ALKALINE EARTH CHLORIDES TO PRODUCE ACONITIC ACID DISSOLVED IN A SOLUTION OF ALKALINE EARTH CHLORIDES THE CONCENTRATION OF SAID AQUEOUS HYDROCHLORIC ACID AND THE AMOUNT AND CONCENTRATION OF SAID ADDED SOLUTION BEING SELECTED TO PRODUCE A RESULTING SOLUTION OF ALKALINE EARTH CHLORIDES HAVING A CONCENTRATION BETWEEN APPROXIMATELY 21 AND 35% AND CONTAINING DISSOLVED ACONITIC ACID, SEPARATING SAID HEATED SOLUTION FROM UNDISSOLVED MATERIAL, THEREAFTER COOLING SAID SOLUTION TO PRODUCE CRYSTALS OF ACONITIC ACID, SEPARATING SAID CRYSTALS FROM THE COOLED SOLUTION AND WASHING SAID CRYSTALS WITH AQUEOUS HYDROCHLORIC ACID TO REMOVE RESIDUAL ALKALINE EARTH CHLORIDE SOLUTION.
References Cited (Backward Citations)
US2345079A
Cited
US2359537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |