US3440166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste treatment process with recycling flocculating agents
Assignee: Boeing North American Inc
•
Filing: 1967-06-13
•
Granted: 1969-04-22
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Expires: 1987-06-13
Abstract
No abstract record available.
Inventors
- 👤 Noah S Davis
- 👤 Oren J Foust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:27
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/12; C02F1/00; C02F1/52; C02F1/5236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876123A
Cited
US2072154A
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US2044584A
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US2044582A
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US2359748A
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US3342731A
Cited
US3345288A
Cited
US3279603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |