US3923472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel made from thermoplastic fibers and oil
Assignee: EIDP Inc
•
Filing: 1973-10-05
•
Granted: 1975-12-02
•
Expires: 1993-10-05
Abstract
Abstract A process and system for filtering oil from a liquid containing oil by passing the liquid through a filter containing melt-spun thermoplastic synthetic fibers for absorbing the oil. When the fibers become saturated with oil, they are heated at an elevated temperature until they become liquid. The resultant liquid is then drawn from the filter for use as fuel.
Inventors
- 👤 Boni Philip Martinez
- 👤 Millard David Zeisberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:20
CPC Classifications
C; C10; C10L; C10L1/00; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; C10G; C10G1/00; C10G1/02; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A PROCESS FOR REMOVING OIL FROM THE SURFACE OF WATER AND FOR CONVERTIG THERMOPLASTIC SYNTHETIC FIBERS INTO A LIQUID SUITABLE FOR FUEL, SAID PROCESS COMPRISING: PLACING SAID FIBERS ON SAID SURFACE AND ABSORBING OIL BY SAID FIBERS UNTIL SAID FIBER BECONE SATURATED WITH OIL AND THEN HEATING THE OIL SATURATED FIBERS TO A TEMPERATURE SUFFICIENT TO CHANGE SAID SATURATED FIBERS TO A LIQUID STATE.
Claim 2
Dependent Claim
64 words
A PROCESS FOR REMOVING OIL FROM THE SURFACE OF WATER AND FOR CONVERTIG THERMOPLASTIC SYNTHETIC FIBERS INTO A LIQUID SUITABLE FOR FUEL, SAID PROCESS COMPRISING: PLACING SAID FIBERS ON SAID SURFACE AND ABSORBING OIL BY SAID FIBERS UNTIL SAID FIBER BECONE SATURATED WITH OIL AND THEN HEATING THE OIL SATURATED FIBERS TO A TEMPERATURE SUFFICIENT TO CHANGE SAID SATURATED FIBERS TO A LIQUID STATE.
Claim 3
Dependent Claim
24 words
The process as defined in claim 1, including the additional step of maintaining said liquid at about said temperature while pumping it for disposal.
Claim 4
Dependent Claim
35 words
The process as defined in claim 2, said fibers being polyethylene and about 16 weight percent of the fibers saturated with oil mixture, said oil being No. 6 fuel oil, said temperature being about 120*C.
Claim 5
Dependent Claim
36 words
The process as defined in claim 1, said fibers being polyethylene and one weight percent of the fibers saturated with oil mixture, said oil being motor oil, said temperature being from about 110* to about 130*C.
Claim 6
Dependent Claim
54 words
A PROCESS FOR FILTERING WITH AND COVERTING THERMOPLASTIC SYNTHETIC FIBERS INTO A LIQUID SUITABLE FOR FUEL, SAID PROCESS COMPRISING: PASSING AN OIL-BEARING LIQUID MIXTURE THROUGH SAID FIBERS UNTIL SAID FIBERS BECOME SATURATED WITH OIL AND THEN HEATING THE OIL SATURATED FIBERS TO A TEMPERATURE SUFFICIENT TO CHANGE SAID SATURATED FIBERS TO A LIQUID STATE.
Claim 7
Dependent Claim
54 words
A PROCESS FOR FILTERING WITH AND COVERTING THERMOPLASTIC SYNTHETIC FIBERS INTO A LIQUID SUITABLE FOR FUEL, SAID PROCESS COMPRISING: PASSING AN OIL-BEARING LIQUID MIXTURE THROUGH SAID FIBERS UNTIL SAID FIBERS BECOME SATURATED WITH OIL AND THEN HEATING THE OIL SATURATED FIBERS TO A TEMPERATURE SUFFICIENT TO CHANGE SAID SATURATED FIBERS TO A LIQUID STATE.
Claim 8
Dependent Claim
24 words
The process as defined in claim 5, including the additional step of maintaining said liquid at about said temperature while pumping it for disposal.
Claim 9
Dependent Claim
35 words
The process as defined in claim 6, said fibers being polyethylene and about 16 weight percent of the fibers saturated with oil mixture, said oil being No. 6 fuel oil, said temperature being about 120*C.
Claim 10
Dependent Claim
36 words
The process as defined in claim 5, said fibers being polyethylene and one weight percent of the fibers saturated with oil mixture, said oil being motor oil, said temperature being from about 110* to about 130*C.
References Cited (Backward Citations)
US3667608A
Cited
US3750600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |