Patent US3555696A successfully refreshed from Google Patents.
US3555696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of alkali perborates and percarbonates
Assignee: Evonik Operations GmbH
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Filing: 1969-07-23
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Granted: 1971-01-19
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Expires: 1989-07-23
Abstract
Abstract ALKALI PERBORATES AND PERCARBONATES ARE SPRAY DRIED BY A PROCESS WHEREIN THE SPRAY CHARGE CONTAINS ONLY THE STABLE BASE COMPONENTS AND THE ACTIVE OXYGEN CARRIER IS DIRECTLY LED INTO THE SPRAY CHARGE BEFORE THE ATOMIZATION AND THE MIXTURE IS THEN SPRAYED AND DRIED IN A SPRAY TOWER.
Inventors
- 👤 Horst Pistor
- 👤 Hubert Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:15
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/12; C01B15/10; C01B15/103
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |