US2886534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkali metal monopersulfates
Assignee: EIDP Inc
•
Filing: 1954-12-23
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Granted: 1959-05-12
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Expires: 1974-12-23
Abstract
No abstract record available.
Inventors
- 👤 Donald B Lake
- 👤 Stephen E Stephanou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:35
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/06; C01B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A METHOD FOR PRODUCTING A DRY, FREE-FLOWING MONOPERSULFATE PRODUCT, THE STEPS OF ADDING TO AN AQUEOUS SOLUTION OF AN ALKALI METAL MONOPERSULFATE AT LEAST 1% BY WEIGHT, BASED UPON THE WEIGHT OF THE SOLUTION, OF A BORON COMPOUND OF THE GROUP CONSISTING OF BORIC OXIDE, BORIC ACID, BORAX AND SODIUM PERBORATE, SID SOLUTION HAVING A PH NOT EXCEEDING 3 BEFORE, DURING AND AFTER THE ADDITION THERETO OF SAID BORON COMPOUND, AND DRYING THE RESULTING SOLUTION.
Claim 2
Dependent Claim
76 words
IN A METHOD FOR PRODUCTING A DRY, FREE-FLOWING MONOPERSULFATE PRODUCT, THE STEPS OF ADDING TO AN AQUEOUS SOLUTION OF AN ALKALI METAL MONOPERSULFATE AT LEAST 1% BY WEIGHT, BASED UPON THE WEIGHT OF THE SOLUTION, OF A BORON COMPOUND OF THE GROUP CONSISTING OF BORIC OXIDE, BORIC ACID, BORAX AND SODIUM PERBORATE, SID SOLUTION HAVING A PH NOT EXCEEDING 3 BEFORE, DURING AND AFTER THE ADDITION THERETO OF SAID BORON COMPOUND, AND DRYING THE RESULTING SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |