Patent EP0505998A2 successfully refreshed from Google Patents.
Patent US3182799A successfully refreshed from Google Patents.
US3182799A
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Method and an apparatus for purifying the unclarified waste water in the paper and pulp and like industries
Assignee: Individual
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Filing: 1961-02-13
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Granted: 1965-05-11
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Expires: 1981-02-13
Abstract
Abstract 896,997. Purifying liquors. KROFTA, M. Feb., 15, 1961 [Feb. 15, 1960], No. 5617/61. Class 46. Unclarified liquid and gas are delivered to tank 1 by conduits 13 and solid particles entrained by gas float along the upper surface of compartments 9 while the clarified water flows along the lower surface of the compartments into collecting chamber 12. The separation is improved by deflectors 19. The solids pass over overflow 18 and are removed by pump 7. The apparatus may be used for the treatment of waste water from the paper and pulp industries.
Inventors
- 👤 Kroffa Milos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:47
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; B; B03; B03B; B03B5/00; B03B5/62; B03B5/623; B03D; B03D1/00; B03D1/02; B03D1/14; B03D1/1481; B03D1/1493; D; D21; D21F; D21F1/00; D21F1/66; Y; Y10; Y10S; Y10S210/00; Y10S210/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
METHOD OF PRUIFYING UNCLARIFIED WASTE WATER IN THE PAPER, PULP AND LIKE INDUSTRIES, COMPRISING INTRODUCING UNCLARIFIED WASTE WATER MIXED WITH GAS INTO A CONTAINER, CONVEYING THE WASTE WATER ALONG A PLURALITY OF UPWARDLY INCLINED NARROW PATHS TO ONE COLLECTING STATION THEREBY DIVIDING THE WASTE WATER INTO A PLURALITY OF WIDE, SHALLOW SUPERIMPOSED MOVING LAYERS OF WASTE AND INTO A PLURALITY OF LAYERS OF CLARIFIED WATER, MOVING THE PLURALITY OF LAYERS OF CLARIFIED WATER BELOW SAID WASTE LAYERS IN A DOWNWARDLY INCLINED PATH TO ANOTHER COLLECTING POINT, SAID PATHS DECREASING IN LENGTH FROM THE BOTTOM UPWARDS SO THAT
Claim 2
Dependent Claim
97 words
METHOD OF PRUIFYING UNCLARIFIED WASTE WATER IN THE PAPER, PULP AND LIKE INDUSTRIES, COMPRISING INTRODUCING UNCLARIFIED WASTE WATER MIXED WITH GAS INTO A CONTAINER, CONVEYING THE WASTE WATER ALONG A PLURALITY OF UPWARDLY INCLINED NARROW PATHS TO ONE COLLECTING STATION THEREBY DIVIDING THE WASTE WATER INTO A PLURALITY OF WIDE, SHALLOW SUPERIMPOSED MOVING LAYERS OF WASTE AND INTO A PLURALITY OF LAYERS OF CLARIFIED WATER, MOVING THE PLURALITY OF LAYERS OF CLARIFIED WATER BELOW SAID WASTE LAYERS IN A DOWNWARDLY INCLINED PATH TO ANOTHER COLLECTING POINT, SAID PATHS DECREASING IN LENGTH FROM THE BOTTOM UPWARDS SO THAT
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |