Patent US2726962A successfully refreshed from Google Patents.
Patent US3304991A successfully refreshed from Google Patents.
US3304991A
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Apparatus and process for dehydrating waste solids concentrates
Assignee: AMERICAN BIOTHERM COMPANY LLC
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Filing: 1966-02-17
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Granted: 1967-02-21
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Expires: 1986-02-17
Abstract
No abstract record available.
Inventors
- 👤 Greenfield Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:15
CPC Classifications
C; C05; C05F; C05F7/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y10; Y10S; Y10S159/00; Y10S159/25; Y10S159/33; Y10S159/905
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A PROCESS FOR DEHYDRATING LIQUIFORM WASTE SOLIDS CONCENTRATES WHICH COMPRISES THE STEPS OF (1) ADMIXING SUCH A WASTE SOLIDS CONCENTRATE WITH A RELATIVELY NONVOLATILE OIL TO OBTAIN A MIXTURE WHICH WILL REMAIN FLUID AND PUMPABLE AFTER THE REMOVAL OF THE WATER CONTENT THEREFROM; (2) SUBJECTING THE RESULTANTOIL-CONTAINING MIXTURE TO A SINGLE DEHYDRATION STEP BY HEAT EVAPORATION, AND (3) WITHDRAWING A SUBSTANTIALLY ANHYDROUS WASTE SOLIDS CONCENTRATE AND OIL SLURRY.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |