US3480542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the purification of waste water
Assignee: Aqseptence Group GmbH
•
Filing: 1967-04-10
•
Granted: 1969-11-25
•
Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Bucksteeg
- 👤 Hans Thiele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:08
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/10; Y; Y02; Y02W; Y02W10/00; Y02W10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967197A
Cited
US2080780A
Cited
US2613181A
Cited
US2754343A
Cited
US3103488A
Cited
US3327855A
Cited
US3275547A
Cited
US3279603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |