US3705098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment with hydrogen peroxide
Assignee: FMC Corp
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Filing: 1971-02-22
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Granted: 1972-12-05
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Expires: 1991-02-22
Abstract
Abstract IN THE TREATMENT OF SEWAGE TO REMOVE ODORS AND REDUCE CORROSION IN SEWERAGE AND TREATMENT PLANTS, SULFIDE AND HDYDROGEN SULFIDE ARE REMOVED BY OXIDATION WITH HYDROGEN PEROXIDE.
Inventors
- 👤 John Alexander Shepherd
- 👤 Millice Floyd Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/025; C02F1/00; C02F1/72; C02F1/722; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/916; Y10S71/00; Y10S71/04
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |