Patent US4659245A successfully refreshed from Google Patents.
Patent US2956411A successfully refreshed from Google Patents.
US2956411A
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Prevention of hydrate formation in refrigerated overhead condenser and accumulator
Assignee: Phillips Petroleum Co
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Filing: 1957-06-24
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Granted: 1960-10-18
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Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Gilmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:54
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/143; F; F16; F16H; F16H15/00; F16H15/02; F16H15/04; F16H15/06; F16H15/32; F16H15/36; F16H15/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A DE-ETHANIZING OPERATION WHEREIN A FEED STOCK CONTAINS ETHANE, HYDROCARBONS HIGHER BOILING THAN ETHANE, MOISTURE AND A HYDRATE FORMING MATERIAL, THE IMPROVEMENT COMPRISING INTRODUCING SAID FEED STOCK INTO A FRACTIONATION ZONE, MAINTAINING SAID ZONE UNDER DE-ETHANIZING CONDITIONS WHEREIN ETHANE, MOISTURE AND SAID HYDRATE FORMING MATERIAL DISTILL OVERHEAD AS AN OVERHEAD VAPOROUS STREAM, COOLING SAID OVERHEAD VAPOROUS STREAM BY HEAT EXCHANGE WITH A PLANT COOLING WATER THEREBY CONDENSING A PORTION OF THE MOISTURE FROM SAID OVERHEAD VAPOROUS
Claim 2
Dependent Claim
77 words
IN A DE-ETHANIZING OPERATION WHEREIN A FEED STOCK CONTAINS ETHANE, HYDROCARBONS HIGHER BOILING THAN ETHANE, MOISTURE AND A HYDRATE FORMING MATERIAL, THE IMPROVEMENT COMPRISING INTRODUCING SAID FEED STOCK INTO A FRACTIONATION ZONE, MAINTAINING SAID ZONE UNDER DE-ETHANIZING CONDITIONS WHEREIN ETHANE, MOISTURE AND SAID HYDRATE FORMING MATERIAL DISTILL OVERHEAD AS AN OVERHEAD VAPOROUS STREAM, COOLING SAID OVERHEAD VAPOROUS STREAM BY HEAT EXCHANGE WITH A PLANT COOLING WATER THEREBY CONDENSING A PORTION OF THE MOISTURE FROM SAID OVERHEAD VAPOROUS
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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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |