Patent US1259952A successfully refreshed from Google Patents.
Patent US3222413A successfully refreshed from Google Patents.
US3222413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion control in hydrocarbon purification
Assignee: Shell USA Inc
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Filing: 1961-06-22
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Granted: 1965-12-07
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Expires: 1981-06-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Woicik
- 👤 Jr James A Brumlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:47
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/17; C07C7/171
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A PROCESS FOR THE SEPARATION OF TERTIARY AMYLENES FROM AN ESSENTIALLY C5 HYDROCARBON FRACTION BY INTIMATELY CONTACTING SAID C5 FRACTION WITH SUFFICIENT AQUEOUS SULFURIC ACID TO ABSORB THE TERTIARY AMYLENES OF SAID C5 FRACTION TO FORM A MIXTURE OF A FAT AQUEOUS ACID PHASE CONTAINING ABSORBED TERTIARY AMYLENES, A RESIDUAL C5 HYDROCARBON PHASE AND AN AQUEOUS ACID/RESIDUAL C5 HYDROCARBON EMULSION PHASE, THE IMPROVEMENT OF EFFECTING RAPID PHASE SEPARATION AND DE-EMULSIFICATION BY PASSING SAID MIXTURE OF AQUEOUS ACID PHASE, RESIDUAL C5 HYDROCARBON PHASE AND AQUEOUS ACID/RESIDUAL C5 HYDROCARBON EMULSION PHASE THROUGH A PENETRABLE BARRIER OF FIBROUS POLYETHYLENE HAVING A FIBER DIAMETER FROM 1/64 TO 1/8 INCH AND HAVING A FIBER LENGTH AT LEAST 100 TIMES AS LONG AS ITS DIAMETER PRIOR TO PHASE STRATIFICATION WHEREBY THE RATE OF PHASE SEPARATION IS MATERIALLY INCREASED AND SAID EMULSION IS SUBSTANTIALLY BROKEN.
Claim 2
Dependent Claim
139 words
IN A PROCESS FOR THE SEPARATION OF TERTIARY AMYLENES FROM AN ESSENTIALLY C5 HYDROCARBON FRACTION BY INTIMATELY CONTACTING SAID C5 FRACTION WITH SUFFICIENT AQUEOUS SULFURIC ACID TO ABSORB THE TERTIARY AMYLENES OF SAID C5 FRACTION TO FORM A MIXTURE OF A FAT AQUEOUS ACID PHASE CONTAINING ABSORBED TERTIARY AMYLENES, A RESIDUAL C5 HYDROCARBON PHASE AND AN AQUEOUS ACID/RESIDUAL C5 HYDROCARBON EMULSION PHASE, THE IMPROVEMENT OF EFFECTING RAPID PHASE SEPARATION AND DE-EMULSIFICATION BY PASSING SAID MIXTURE OF AQUEOUS ACID PHASE, RESIDUAL C5 HYDROCARBON PHASE AND AQUEOUS ACID/RESIDUAL C5 HYDROCARBON EMULSION PHASE THROUGH A PENETRABLE BARRIER OF FIBROUS POLYETHYLENE HAVING A FIBER DIAMETER FROM 1/64 TO 1/8 INCH AND HAVING A FIBER LENGTH AT LEAST 100 TIMES AS LONG AS ITS DIAMETER PRIOR TO PHASE STRATIFICATION WHEREBY THE RATE OF PHASE SEPARATION IS MATERIALLY INCREASED AND SAID EMULSION IS SUBSTANTIALLY BROKEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |