Patent US1750487A successfully refreshed from Google Patents.
Patent US2904495A successfully refreshed from Google Patents.
US2904495A
Expired / Lapsed
US
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Process for the recovery of solids from liquids by means of endless belt absorption
Assignee: Sunoco Inc
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Filing: 1955-12-30
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Granted: 1959-09-15
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Seymour W Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
B; B01; B01D; B01D43/00; B01D33/00; B01D33/04; B01D33/042; B01D33/44; B01D33/46; B01D33/463; Y; Y10; Y10S; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
PROCESS FOR SEPARATING SOLIDS FROM LIQUIDS WHICH COMPRISES FLOWING AN ADMIXTURE OF A SOLID AND LIQUID ONTO THE UPPER SURFACE OF A THIN LAYER OF SPONGY SHEET MATERIAL, THE LOWER SURFACE OF SAID THIN LAYER BEING IN CONTACT WITH THE UPPER SURFACE OF A THICK LAYER OF SPONGY SHEET MATERIAL, WHEREBY A MAJOR PROPORTION OF THE LIQUID FLOWS THROUGH SAID THIN LAYER AND IS ABSORBED IN SAID THICK LAYER AND THE SOLID REMAINS ON SAID THIN LAYER, AND SEPARATING THE THIN LAYER CONTAINING THE SOLID FROM THE THICK LAYER CONTAINING A MAJOR PROPORTION OF THE LIQUID, AND RECOVERING AT LEAST A PORTION OF THE LIQUID FROM THE THICK LAYER.
Claim 2
Dependent Claim
109 words
PROCESS FOR SEPARATING SOLIDS FROM LIQUIDS WHICH COMPRISES FLOWING AN ADMIXTURE OF A SOLID AND LIQUID ONTO THE UPPER SURFACE OF A THIN LAYER OF SPONGY SHEET MATERIAL, THE LOWER SURFACE OF SAID THIN LAYER BEING IN CONTACT WITH THE UPPER SURFACE OF A THICK LAYER OF SPONGY SHEET MATERIAL, WHEREBY A MAJOR PROPORTION OF THE LIQUID FLOWS THROUGH SAID THIN LAYER AND IS ABSORBED IN SAID THICK LAYER AND THE SOLID REMAINS ON SAID THIN LAYER, AND SEPARATING THE THIN LAYER CONTAINING THE SOLID FROM THE THICK LAYER CONTAINING A MAJOR PROPORTION OF THE LIQUID, AND RECOVERING AT LEAST A PORTION OF THE LIQUID FROM THE THICK LAYER.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |