Patent US2780304A successfully refreshed from Google Patents.
US2780304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of crude oil
Assignee: Black Sivalls and Bryson Inc
•
Filing: 1954-03-02
•
Granted: 1957-02-05
•
Expires: 1974-03-02
Abstract
No abstract record available.
Inventors
- 👤 James E Pew
- 👤 Charles W Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:52
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
METHOD FOR DEMULSIFYING CRUDE PETROLEUM AND DISTILLING THEREFROM A SPECIFIC HYDROCARBON CONSTITUENT WHILE RETAINING IN THE DEMULSIFIED OIL A MAJOR PROPORTION OF THE NEXT HIGHER BOILING CONSTITUENT WHICH COMPRISES FEEDING THE EMULSIFIED CRUDE OIL INTO THE TOP OF AN ELONGATED COLUMN HAVING A SERIES OF VAPOR-LIQUID CONTACTING SECTIONS SEPARATED BY HORIZONTAL PERFORATED TRAYS, FLOWING DOWNWARDLY THROUGH THE COLUMN LIQUID CONSISTING ESSENTIALLY OF THE EMULSIFIED CRUDE OIL CONSTITUENTS AND PASSING SUCH LIQUID INTO A DEMULSIFYING ZONE, HEATING THE LIQUID CONSTITUENTS TO EFFECT SEPARATION OF AQUEOUS AND HYDROCARBON PHASES AND TO EVOLVE HYDROCARBON GAS, PASS-
Claim 2
Dependent Claim
93 words
METHOD FOR DEMULSIFYING CRUDE PETROLEUM AND DISTILLING THEREFROM A SPECIFIC HYDROCARBON CONSTITUENT WHILE RETAINING IN THE DEMULSIFIED OIL A MAJOR PROPORTION OF THE NEXT HIGHER BOILING CONSTITUENT WHICH COMPRISES FEEDING THE EMULSIFIED CRUDE OIL INTO THE TOP OF AN ELONGATED COLUMN HAVING A SERIES OF VAPOR-LIQUID CONTACTING SECTIONS SEPARATED BY HORIZONTAL PERFORATED TRAYS, FLOWING DOWNWARDLY THROUGH THE COLUMN LIQUID CONSISTING ESSENTIALLY OF THE EMULSIFIED CRUDE OIL CONSTITUENTS AND PASSING SUCH LIQUID INTO A DEMULSIFYING ZONE, HEATING THE LIQUID CONSTITUENTS TO EFFECT SEPARATION OF AQUEOUS AND HYDROCARBON PHASES AND TO EVOLVE HYDROCARBON GAS, PASS-
References Cited (Backward Citations)
US1670805A
Cited
US1728440A
Cited
US2181684A
Cited
US2353138A
Cited
US2546269A
Cited
US2528032A
Cited
US2638437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |