US3463618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium carbonate perhydrate,its treatment and method of preparation
Assignee: Evonik LCL Ltd
•
Filing: 1966-12-09
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Granted: 1969-08-26
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Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 John F G Harris
- 👤 Anthony M Hildon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:19
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/10; C01B15/103
Claims Analysis
Total Claims: 0
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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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |