Patent US3681283A successfully refreshed from Google Patents.
US3681283A
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US
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Waste treatment with nucleoprotein flocculating agent
Assignee: General Mills Inc
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Filing: 1970-09-02
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Granted: 1972-08-01
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Expires: 1990-09-02
Abstract
Abstract A FLUOCCULATING AGENT IS DISCLOSED INCLUDING NUCLEOPROTEIN MATERIAL WHICH IS TREATED WITH AN ORGANIC OR INORGANIC SALT. THE FLOCCULATION AGENT IS USED TO REMOVE SUSPENDED ORGANIC AND/OR INORGANC WASTE MATERIALS FROM WATER.
Inventors
- 👤 Mao H Yueh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:17
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5263; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S210/907; Y10S530/00; Y10S530/82; Y10S530/827; Y10S530/829; Y10S530/837; Y10S530/838; Y10S530/843; Y10S530/845; Y10S530/846; Y10S530/85; Y10S530/855; Y10S530/857; Y10S530/859
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |