US2830012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for re-refining kerosene
Assignee: C ELLIOTT ARMSTRONG
•
Filing: 1955-08-04
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Granted: 1958-04-08
•
Expires: 1975-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel B Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:19
CPC Classifications
D; D06; D06F; D06F43/00; D06F43/08; D06F43/081; D06F43/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR RE-REFINING USED KEROSENE IN A KEROSENE WASH SOLUTION COMPRISING COLLECTING USED KEROSENE WASH SOLUTION IN A SUMP, ALLOWING SAID SOLUTION TO SETTLE FOR A TIME PERIOD SUFFICIENTLY LONG IN DURATION TO ALLOW SETTLING OUT OF AT LEAST 95% OF THE WATER IN THE WASH SOLUTION THEREBY FORMING A KEROSENE-ON-WATER FORMATION, PUMPING THE UPPER USED KEROSENE LAYER THROUGH A STRAINING ZONE TO THEREBY REMOVE LARGE SOLID IMPURITIES, PUMPING SAID STRAINED KEROSENE THROUGH A FILTERING ZONE TO REMOVE FINE SOLID IMPURITIES, PUMPING SAID STRAINED AND FILTERED KEROSENE THROUGH AN ADSORPTION ZONE TO REMOVE DISSOLVED AND ENTRAINED IMPURITIES, RECYCLING SAID STRAINED AND FILTERED KEROSENE LAYER THROUGH THE SAID ADSORPTION ZONE IN A RATIO OF NOT LESS THAN 4 TO 1, AND COLLECTING THE RE-REFINED KEROSENE FOR REUSE.
Claim 2
Independent Claim
127 words
A METHOD FOR RE-REFINING USED KEROSENE IN A KEROSENE WASH SOLUTION COMPRISING COLLECTING USED KEROSENE WASH SOLUTION IN A SUMP, ALLOWING SAID SOLUTION TO SETTLE FOR A TIME PERIOD SUFFICIENTLY LONG IN DURATION TO ALLOW SETTLING OUT OF AT LEAST 95% OF THE WATER IN THE WASH SOLUTION THEREBY FORMING A KEROSENE-ON-WATER FORMATION, PUMPING THE UPPER USED KEROSENE LAYER THROUGH A STRAINING ZONE TO THEREBY REMOVE LARGE SOLID IMPURITIES, PUMPING SAID STRAINED KEROSENE THROUGH A FILTERING ZONE TO REMOVE FINE SOLID IMPURITIES, PUMPING SAID STRAINED AND FILTERED KEROSENE THROUGH AN ADSORPTION ZONE TO REMOVE DISSOLVED AND ENTRAINED IMPURITIES, RECYCLING SAID STRAINED AND FILTERED KEROSENE LAYER THROUGH THE SAID ADSORPTION ZONE IN A RATIO OF NOT LESS THAN 4 TO 1, AND COLLECTING THE RE-REFINED KEROSENE FOR REUSE.
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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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |