US2955020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing monopersulfates
Assignee: FMC Corp
•
Filing: 1958-10-15
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Granted: 1960-10-04
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Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Darbee
- 👤 James R Kolczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:52
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/06; C01B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
METHOD OF PRODUCING A MONOPERSULFATE COMPRISING REACTING TOGETHER, IN THE PRESENCE OF AN AMOUNT OF A STRONG OXYGENATED INORGANIC ACID WHICH PROVIDES 0.05 TO 2.2 EQUIVALENTS OF HYDROGEN ION PER KILOGRAM OF REACTION MIXTURE AND AT A TEMPERATURE OF ABOUT 50* TO 120*C., (A) A DISPERSULFATE FRROM THE GROUP CONSISTING OF AMMONIUM DISPERSULFATE, THE ALKALI METAL DISPERSULFATES, AND THE ALKALINE EARTH METAL DISPERSULFATES, AND (B) AQUEOUS HYDROGEN PEROXIDE HAVING A CONCENTRATION OF AT LEAST ABOUT 50%.
Claim 2
Dependent Claim
76 words
METHOD OF PRODUCING A MONOPERSULFATE COMPRISING REACTING TOGETHER, IN THE PRESENCE OF AN AMOUNT OF A STRONG OXYGENATED INORGANIC ACID WHICH PROVIDES 0.05 TO 2.2 EQUIVALENTS OF HYDROGEN ION PER KILOGRAM OF REACTION MIXTURE AND AT A TEMPERATURE OF ABOUT 50* TO 120*C., (A) A DISPERSULFATE FRROM THE GROUP CONSISTING OF AMMONIUM DISPERSULFATE, THE ALKALI METAL DISPERSULFATES, AND THE ALKALINE EARTH METAL DISPERSULFATES, AND (B) AQUEOUS HYDROGEN PEROXIDE HAVING A CONCENTRATION OF AT LEAST ABOUT 50%.
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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |