US3212850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkali metal peroxides
Assignee: American Potash and Chemical Corp
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Filing: 1962-11-13
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Granted: 1965-10-19
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Emmitt L Klebba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/04; C01B15/043; C01B15/0435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS COMPRISING (A) REACTING AN ALKALI METAL HYDROXIDE AND H2O2 IN AN AQUEOUS MEDIUM TO FORM A MIXTURE CONTANING ALKALI METAL PEROXIDE, ADDING SUFFICIENT ALCOHOL TO SAID MIXTURE TO CONVERT SAID ALKALI METAL PEROXIDE TO A SOLID IN AN AQUEOUS-ALCOHOLIC LIQUID MIXTURE, (B) RECOVERING SAID SOLID ALKALI METAL PEROXIDE FROM THE LIQUID MIXTURE, (C) ADMIXING ALKALI METAL CARBONATE WITH THE REMAINING LIQUID MIXTURE IN AN AMOUNT SUFFICIENT TO SEPARATE SUBSTANTIALLY ALL OF THE WATER AND WATER-SOLUBLE SALTS FROM THE ALCOHOL IN THE FORM OF A SOLID COMPRISING THE CORRESPONDING HYDRATED ALKALI METAL CARBONATE, AND (D) RETURNING SAID ALCOHOL TO SAID (A).
Claim 2
Dependent Claim
102 words
A PROCESS COMPRISING (A) REACTING AN ALKALI METAL HYDROXIDE AND H2O2 IN AN AQUEOUS MEDIUM TO FORM A MIXTURE CONTANING ALKALI METAL PEROXIDE, ADDING SUFFICIENT ALCOHOL TO SAID MIXTURE TO CONVERT SAID ALKALI METAL PEROXIDE TO A SOLID IN AN AQUEOUS-ALCOHOLIC LIQUID MIXTURE, (B) RECOVERING SAID SOLID ALKALI METAL PEROXIDE FROM THE LIQUID MIXTURE, (C) ADMIXING ALKALI METAL CARBONATE WITH THE REMAINING LIQUID MIXTURE IN AN AMOUNT SUFFICIENT TO SEPARATE SUBSTANTIALLY ALL OF THE WATER AND WATER-SOLUBLE SALTS FROM THE ALCOHOL IN THE FORM OF A SOLID COMPRISING THE CORRESPONDING HYDRATED ALKALI METAL CARBONATE, AND (D) RETURNING SAID ALCOHOL TO SAID (A).
References Cited (Backward Citations)
DE1059419B
Cited
US2962358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |