Patent US2790307A successfully refreshed from Google Patents.
US2790307A
Expired / Lapsed
US
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Storage of volatile liquids
Assignee: Phillips Petroleum Co
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Filing: 1955-09-12
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Granted: 1957-04-30
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Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Elwyn C Ayres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:05
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/38; F; F17; F17C; F17C13/00; F17C13/02; F17C13/025; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/03; F17C2201/032; F17C2201/05; F17C2201/052; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0332; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2223/04; F17C2223/041; F17C2225/00; F17C2225/04; F17C2225/042; F17C2225/043; F17C2225/044; F17C2227/00; F17C2227/01; F17C2227/0128; F17C2227/0135; F17C2227/03; F17C2227/0337; F17C2227/0339; F17C2250/00; F17C2250/04; F17C2250/0404; F17C2250/0408; F17C2250/06; F17C2250/0605; F17C2250/0626; F17C2260/00; F17C2260/02; F17C2260/021; F17C2260/03; F17C2260/031; F17C2265/00; F17C2265/03; F17C2265/032; F17C2265/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD FOR CONTROLLING THE MAXIMUM PRESSURE IN A STORAGE VESSEL CONTAINING LIQUID AND VAPORS, WHICH LIQUID IS COOLER NEAR THE BOTTOM THAN ON ITS SURFACE, WHICH COMPRISES CONTACTING SUCH VAPORS WITH A PORTION OF SAID COOLER LIQUID AND INTRODUCING DIRECTLY TO THE SURFACE OF SAID LIQUID ANOTHER PORTION OF SAID COOLER LIQUID, THEREBY COOLING SAID VAPORS AND COOLING THE SURFACE OF SAID LIQUID, THEUS REDUCING THE PRESSURE, THE AMOUNT OF SAID COOLING BEING DEPENDENT UPON THE PRESSURE IN THE VESSEL AND BEING EFFECTIVE TO MAINTAIN SAID PRESSURE BELOW A PREDETERMINED VALUE.
Claim 2
Independent Claim
92 words
A METHOD FOR CONTROLLING THE MAXIMUM PRESSURE IN A STORAGE VESSEL CONTAINING LIQUID AND VAPORS, WHICH LIQUID IS COOLER NEAR THE BOTTOM THAN ON ITS SURFACE, WHICH COMPRISES CONTACTING SUCH VAPORS WITH A PORTION OF SAID COOLER LIQUID AND INTRODUCING DIRECTLY TO THE SURFACE OF SAID LIQUID ANOTHER PORTION OF SAID COOLER LIQUID, THEREBY COOLING SAID VAPORS AND COOLING THE SURFACE OF SAID LIQUID, THEUS REDUCING THE PRESSURE, THE AMOUNT OF SAID COOLING BEING DEPENDENT UPON THE PRESSURE IN THE VESSEL AND BEING EFFECTIVE TO MAINTAIN SAID PRESSURE BELOW A PREDETERMINED VALUE.
References Cited (Backward Citations)
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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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |