Patent US3044138A successfully refreshed from Google Patents.
Patent US3425936A successfully refreshed from Google Patents.
US3425936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste water treatment system
Assignee: Neptune Microfloc Inc
•
Filing: 1967-03-02
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Granted: 1969-02-04
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Gordon L Cuip
- 👤 Robert D Schilling
- 👤 Sigurd P Hansen
- 👤 Charles W Botsford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; Y; Y02; Y02W; Y02W10/00; Y02W10/10
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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |