US2858569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing synthetic detergent cakes
Assignee: Individual
•
Filing: 1955-07-01
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Granted: 1958-11-04
•
Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F J Dupuy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0047; C11D17/006; C11D17/0052
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |