US2797138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting evaporation of crude oil and floating layer for use therein
Assignee: Standard Oil Co
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Filing: 1953-10-30
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Granted: 1957-06-25
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Veatch Franklin
- 👤 Everett C Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:41
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/38; B65D90/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF INHIBITING THE EVAPORSTION OF VOLATILE COMPONENTS OF CRUDE OIL WHICH COMPRISES COVERING THE SURFACE OF SAID OIL WITH A FLOATING LAYER OF NON-VOLATILE COMPONENTS OF CRUDE OIL AND DISCRETE, SPHERICAL, OIL-WETTABLE, HOLLOW, GAS-FILLED, HOLE-FREE PARTICLES OF A SOLID MATERIAL INERT TO SAID OIL, WHICH PARTICLES HAVE AN AVERAGE DIAMETER OF LESS THAN 500 MICRONS AND HAVE A LIQUID DISPLACEMENT DENSITY LESS THAN THE DENSITY OF SAID OIL, SAID PARTICLES OCCUPYING ABOUT 20TO 70% BY VOLUME OF THE FLOATING LAYER.
Claim 2
Independent Claim
82 words
A METHOD OF INHIBITING THE EVAPORSTION OF VOLATILE COMPONENTS OF CRUDE OIL WHICH COMPRISES COVERING THE SURFACE OF SAID OIL WITH A FLOATING LAYER OF NON-VOLATILE COMPONENTS OF CRUDE OIL AND DISCRETE, SPHERICAL, OIL-WETTABLE, HOLLOW, GAS-FILLED, HOLE-FREE PARTICLES OF A SOLID MATERIAL INERT TO SAID OIL, WHICH PARTICLES HAVE AN AVERAGE DIAMETER OF LESS THAN 500 MICRONS AND HAVE A LIQUID DISPLACEMENT DENSITY LESS THAN THE DENSITY OF SAID OIL, SAID PARTICLES OCCUPYING ABOUT 20TO 70% BY VOLUME OF THE FLOATING LAYER.
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |