US3733263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste treatment system
Assignee: Kimberly Clark Corp
•
Filing: 1971-03-01
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Granted: 1973-05-15
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Expires: 1991-03-01
Abstract
Abstract COMPACT WASTE TREATMENT UNIT UTILIZING ANNULAR FLOW, POSITIVE MIXING AERATION WITH INCUSIVE SLUDGE BLANKET CLARIFICATION AND INTERNAL SLUDGE RECYCLE.
Inventors
- 👤 M Mandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1257; C02F3/1278; C02F3/1294; Y; Y02; Y02W; Y02W10/00; Y02W10/10
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |