US2797141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting evaporation of volatile products 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
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/38; B65D90/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
THE METHOD OF INHIBITING THE EVAPORATION OF A VOLATILE LIQUID PRODUCT WHICH COMPRISES COVERING THE SURFACE OF SAID VOLATILE LIQUID PRODUCT WITH A FLOATING LAYER CONTAINING AS THE ESSENTIAL INGREDIENTS A NON-VOLATILE, OIL-INSOLUBLE SEALING LIQUID HAVING A DENSITY GREATER THAN THE DENSITY OF SAID VOLATILE LIQUID PRODUCT, DISCRETE, SPHERICAL, HOLLOW, GAS-FILLED HOLE-FREE PARTICLES WETTABLE BY SAID SEALING LIQUID HAVING AN AVERAGE DIAMETER OF LESS THAN 500 MICRONS OF SOLID MATERIAL INERT TO SAID VOLATE LIQUID PRODUCT AND SAID SEALING LIQUID, WHICH PARTICLES HAVE A LIQUID DISPLACEMENT DENSITY OF FROM 0.05 TO 0.6, THE SEALING LIQUID IN SAID FLOATING LAYER BEING IN AN AMOUNT WITHIN THE RANGEE OF 40 TO 80% BY VOLUME AND SAID PARTICLES IN THE SAID FLOATING LAYER BEING IN AN AMOUNT WITHIN THE RANGE OF 20 TO 60% BY VOLUME TO IMPART A DENSITY TO SAID FLOATING LAYER LESS THAN THE DENSITY OF THE LOTATILE LIQUID PRODUCT, AND A GELLING AGENT IN AN AMOUNT WITHIN THE RANGE OF 0.5 TO 5.0% BY WEIGHT OF THE SEALING LIQUID TO PROVIDE A YIELD POINT TO PREVENT THE MAXIMUM SIZE PARTICLES FRTOM RISING TO THE SURFACE OF THE FLOATING LAYER, AND TO RETAIN ITS FLUIDITY.
Claim 2
Independent Claim
195 words
THE METHOD OF INHIBITING THE EVAPORATION OF A VOLATILE LIQUID PRODUCT WHICH COMPRISES COVERING THE SURFACE OF SAID VOLATILE LIQUID PRODUCT WITH A FLOATING LAYER CONTAINING AS THE ESSENTIAL INGREDIENTS A NON-VOLATILE, OIL-INSOLUBLE SEALING LIQUID HAVING A DENSITY GREATER THAN THE DENSITY OF SAID VOLATILE LIQUID PRODUCT, DISCRETE, SPHERICAL, HOLLOW, GAS-FILLED HOLE-FREE PARTICLES WETTABLE BY SAID SEALING LIQUID HAVING AN AVERAGE DIAMETER OF LESS THAN 500 MICRONS OF SOLID MATERIAL INERT TO SAID VOLATE LIQUID PRODUCT AND SAID SEALING LIQUID, WHICH PARTICLES HAVE A LIQUID DISPLACEMENT DENSITY OF FROM 0.05 TO 0.6, THE SEALING LIQUID IN SAID FLOATING LAYER BEING IN AN AMOUNT WITHIN THE RANGEE OF 40 TO 80% BY VOLUME AND SAID PARTICLES IN THE SAID FLOATING LAYER BEING IN AN AMOUNT WITHIN THE RANGE OF 20 TO 60% BY VOLUME TO IMPART A DENSITY TO SAID FLOATING LAYER LESS THAN THE DENSITY OF THE LOTATILE LIQUID PRODUCT, AND A GELLING AGENT IN AN AMOUNT WITHIN THE RANGE OF 0.5 TO 5.0% BY WEIGHT OF THE SEALING LIQUID TO PROVIDE A YIELD POINT TO PREVENT THE MAXIMUM SIZE PARTICLES FRTOM RISING TO THE SURFACE OF THE FLOATING LAYER, AND TO RETAIN ITS FLUIDITY.
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 |