US2800390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of iodides and amphoteric metal hydroxides
Assignee: Individual
•
Filing: 1954-09-23
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Granted: 1957-07-23
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Expires: 1974-09-23
Abstract
No abstract record available.
Inventors
- 👤 Behrman Abraham Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:55
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/12; C01F; C01F11/00; C01F11/20; C01F7/00; C01F7/02; C01F7/42; C01F7/428
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A PROCESS FOR PREPARING IODIDES FROM IODATES OF THE ALKALI METALS AND ALKALINE EARTH METALS, WHEREIN THE IODATES ARE REDUCED TO IODIDES WITH AN AMPHOTERIC METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ZINC IN THE PRESENCE OF WATER AND OF SUFFICIENT ALKALI TO MAKE THE RESULTANT IODIDE SOLUTION ALKALINE TO PHENOLPHTHALEIN, AND AMPHOTERIC HYDROXIDE IS PRECIPITATED FROM THE IODIDE SOLUTION ON REDUCING THE PH OF THE SOLUTION BY MEANS OF AN ACID TO THE RANGE OF MINIMUM SOLUBILITY OF THE AMPHOTERIC HYDROXIDE AND SEPARATING THE PRECIPITATED AMPHOTERIC HYDROXIDE FROM THE SOLUTION BEFORE RECOVERING THE LODIDE FORM THE SOLUTION, THE IMPROVEMENT WHICH COMPRISES ACCOMPLISHING THE SAID PH REDUCTION BY TREATING THE SOLUTION WITH CARBONIC ACID IN SUFFICIENT AMOUNT TO EFFECT THE DESIRED PH REDUCTION.
Claim 2
Dependent Claim
126 words
IN A PROCESS FOR PREPARING IODIDES FROM IODATES OF THE ALKALI METALS AND ALKALINE EARTH METALS, WHEREIN THE IODATES ARE REDUCED TO IODIDES WITH AN AMPHOTERIC METAL SELECTED FROM THE CLASS CONSISTING OF ALUMINUM AND ZINC IN THE PRESENCE OF WATER AND OF SUFFICIENT ALKALI TO MAKE THE RESULTANT IODIDE SOLUTION ALKALINE TO PHENOLPHTHALEIN, AND AMPHOTERIC HYDROXIDE IS PRECIPITATED FROM THE IODIDE SOLUTION ON REDUCING THE PH OF THE SOLUTION BY MEANS OF AN ACID TO THE RANGE OF MINIMUM SOLUBILITY OF THE AMPHOTERIC HYDROXIDE AND SEPARATING THE PRECIPITATED AMPHOTERIC HYDROXIDE FROM THE SOLUTION BEFORE RECOVERING THE LODIDE FORM THE SOLUTION, THE IMPROVEMENT WHICH COMPRISES ACCOMPLISHING THE SAID PH REDUCTION BY TREATING THE SOLUTION WITH CARBONIC ACID IN SUFFICIENT AMOUNT TO EFFECT THE DESIRED PH REDUCTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |