US3002813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing monopersulfates
Assignee: FMC Corp
•
Filing: 1959-07-15
•
Granted: 1961-10-03
•
Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Darbee
- 👤 James R Kolczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:27
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/06; C01B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
METHOD OF PRODUCING A MONOPERSULFATE COMPRISING REACTING TOGETHER AT A TEMPERATURE OF ABOUT 50* TO 110*C. (A) A BISULFATE FROM THE GROUP CONSISTING OF AMMONIUM BISULFATE, THE ALKALI METAL BISULFATES, AND THE ALKALINE EARTH METAL BISULFATES, AND (B) AQUEOUS HYDROGEN PEROXIDE, IN THE PRESENCE OF SUFFICIENT AMOUNTS OF AN OXYGENATED INORGANIC ACID TO YIELD FROM 0.05 TO TWO EQUIVALENTS OF HYDROGEN ION PER KILOGRAM OF REACTION MIXTURE, SAID OXYGENATED ACID BEING FREE OF ANIONS WHICH CATALYTICALLY DECOMPOSE THE ACTIVE OXYGEN CONSTITUENTS, AND WHEREIN THE MOLAR RATIO OF HYDROGEN PEROXIDE TO WATER PRESENT IN THE FINAL REACTION MIXTURE IS AT LEAST 1:1.
Claim 2
Dependent Claim
101 words
METHOD OF PRODUCING A MONOPERSULFATE COMPRISING REACTING TOGETHER AT A TEMPERATURE OF ABOUT 50* TO 110*C. (A) A BISULFATE FROM THE GROUP CONSISTING OF AMMONIUM BISULFATE, THE ALKALI METAL BISULFATES, AND THE ALKALINE EARTH METAL BISULFATES, AND (B) AQUEOUS HYDROGEN PEROXIDE, IN THE PRESENCE OF SUFFICIENT AMOUNTS OF AN OXYGENATED INORGANIC ACID TO YIELD FROM 0.05 TO TWO EQUIVALENTS OF HYDROGEN ION PER KILOGRAM OF REACTION MIXTURE, SAID OXYGENATED ACID BEING FREE OF ANIONS WHICH CATALYTICALLY DECOMPOSE THE ACTIVE OXYGEN CONSTITUENTS, AND WHEREIN THE MOLAR RATIO OF HYDROGEN PEROXIDE TO WATER PRESENT IN THE FINAL REACTION MIXTURE IS AT LEAST 1:1.
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |