Patent US3855152A successfully refreshed from Google Patents.
US3855152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of perlite-asphalt-fiber compositions for separating hydrocarbons from water
Assignee: Individual
•
Filing: 1972-09-28
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Granted: 1974-12-17
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Expires: 1992-09-28
Abstract
Abstract A compound for separating organic liquids, particularly hydrocarbons from an organic liquid-water system including a loose mass of expanded perlite mixed with clays and a fiberous filler formed by demoisturizing an aqueous suspension of the compound and communiting the demoisturized mixture. The compound is introduced into, or contacted by, the organic liquid-water system to selectively absorb the hydrocarbon whereupon the compound and the hydrocarbon absorbed therein are mechanically separated from the system.
Inventors
- 👤 P Preus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:48
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/103; B01J20/106; C; C02; C02F; C02F1/00; C02F1/68; C02F1/681
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
95 words
THE PROCESS OF PRODUCING AN OLEOPHILIC-HYDROPHOBICLIGHTER THAN WATER COMPOSITION FOR THE SEPARATION OF WATER IMMISCIBLE ORGANIC LIQUID FROM WATER PRODUCED BY: FORMING AN AQUEOUS MIX OF A MAJOR PROPORTION OF EXPANDED PERLITE, ASPHALT, AND FIBROUS MATERIAL TO PRODUCE A COHERENT MEMBER; REMOVING THE MOISTURE FROM SAID MEMBER; COMMINUTING THE DEMOISTURIZED MEMBER TO PRODUCE A LOOSE MASS OF PARTICLES HAVING AN AVERAGE PARTICLE SIZE WITH ONE DIMENSION OF AT LEAST ABOUT 1/8 INCH IN LENGTH, WHEREBY SAID MASS, WHEN INTRODUCED INTO AN ORGANIC LIQUID-WATER SYSTEM, SELECTIVELY ABSORBS THE ORGANIC LIQUID FRM THE WATER AND REMAINS BUOYANT.
Claim 2
Dependent Claim
95 words
THE PROCESS OF PRODUCING AN OLEOPHILIC-HYDROPHOBICLIGHTER THAN WATER COMPOSITION FOR THE SEPARATION OF WATER IMMISCIBLE ORGANIC LIQUID FROM WATER PRODUCED BY: FORMING AN AQUEOUS MIX OF A MAJOR PROPORTION OF EXPANDED PERLITE, ASPHALT, AND FIBROUS MATERIAL TO PRODUCE A COHERENT MEMBER; REMOVING THE MOISTURE FROM SAID MEMBER; COMMINUTING THE DEMOISTURIZED MEMBER TO PRODUCE A LOOSE MASS OF PARTICLES HAVING AN AVERAGE PARTICLE SIZE WITH ONE DIMENSION OF AT LEAST ABOUT 1/8 INCH IN LENGTH, WHEREBY SAID MASS, WHEN INTRODUCED INTO AN ORGANIC LIQUID-WATER SYSTEM, SELECTIVELY ABSORBS THE ORGANIC LIQUID FRM THE WATER AND REMAINS BUOYANT.
Claim 3
Dependent Claim
22 words
The method in accordance with claim 1 wherein a clay constituent is additionally included in the said forming of said aqueous mix.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |