US2873236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing hypochlorite of soda in an electronic cell
Assignee: Individual
•
Filing: 1951-05-10
•
Granted: 1959-02-10
•
Expires: 1971-05-10
Abstract
No abstract record available.
Inventors
- 👤 Ferris Donald Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4672; C02F1/4674; C02F1/46104; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C02F1/46109; C02F2001/46152; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/4618; C02F2301/00; C02F2301/04; C02F2301/043; C02F2303/00; C02F2303/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099801A
Cited
US2180668A
Cited
GB190228353A
Cited
US892983A
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US1397239A
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US2011171A
Cited
GB400247A
Cited
US2191574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |