US3623836A
Expired / Lapsed
US
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Procedure for the preparation of sodium perborate monohydrate
Assignee: Solvay SA
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Filing: 1969-07-16
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Granted: 1971-11-30
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Expires: 1989-07-16
Abstract
Abstract MONOHYDRATED SODIUM PERBORATE IS PREPARED BY DEHYDRATING SODIUM PERBORATE TETRAHYDRATE CONTINUOUSLY IN A FLUID BED DRYER BY THE ACTION OF HOT AIR WHICH IS AT A TEMPERATURE NOT LOWER THAN 180*C. SODIUM PERBORATE MONOHYDRATE THUS PRODUCT HAS EXCELLENT STRENGTH AGAINST ATTRITION.
Inventors
- 👤 Jose Luis Denaeyer
- 👤 Willy Kegelart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/12; C01B15/126
Claims Analysis
Total Claims: 0
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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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |