US3425786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic peroxidic bleaches activated with n,n'-diacyl-methylene-diformamide
Assignee: Evonik Operations GmbH
•
Filing: 1966-06-06
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Granted: 1969-02-04
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Karl Dithmar
- 👤 Peter Koblischek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D17/00; C11D17/0039
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3177148A
Cited
US3163606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |