US3595785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and compositions for removing phosphates from water
Assignee: Eagle Picher Industries Inc
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Filing: 1970-02-05
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Granted: 1971-07-27
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Expires: 1990-02-05
Abstract
Abstract METHOD AND COMPOSITIONS FOR INORGANIC PHOSPHATES FROM WASTE WATERS WHEREIN THE PHOSPHATE BEARING WATER IS CONTACTED WITH A BOROSILICATE GLASS COMPOSITION CONTAINING FROM 5 TO 25% BY WEIGHT OF ONE OR MORE OF THE FOLLOWING OXIDES: CALCIUM OXIDE, BARIUM OXIDE AND ZINC OXIDE.
Inventors
- 👤 Burnett D Bruce
- 👤 Heinz Seiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:00
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |