US3697419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for the purification of waste effluent
Assignee: Tasman Vaccine Laboratories Ltd
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Filing: 1969-07-14
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Granted: 1972-10-10
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Expires: 1989-07-14
Abstract
Abstract THE SPECIFICATION DESCRIBES THE USE OF A PARTICULATE ION EXCHANGE MATERIAL FOR THE PURIFICATION OF WASTE EFFLUENTS, SUCH AS WASHINGS OBTAINED FROM SLAUGHTER HOUSES, WHICH CONTAIN PROTEIN OR FAT, OR BOTH. THE USE OF THE MATERIAL CAN PROVIDE EFFLUENT, WITH A SUFFICIENTLY LOW CONTAMINATION LEVEL FOR IT TO BE READILY DISPOSED OF, OR EVEN REUSED FOR FURTHER CLEANING PURPOSES. BY SUITABLE ELUTION OF THE MATERIAL, THE PROTEIN OR FAT CAN BE RELEASED AND ISOLATED FOR USE, FOR EXAMPLE, AS ANIMAL FOOD. THE ION EXCHANGE MATERIAL CAN BE REGENERATED FOR REUSE.
Inventors
- 👤 Roy Arthur Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
C; C11; C11B; C11B13/00; A; A23; A23J; A23J1/00; A23J1/001; B; B01; B01J; B01J39/00; B01J39/04; B01J47/00; B01J47/014; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74; Y10; Y10S; Y10S530/00; Y10S530/859
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |