US3034307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of multi-unit fractionation systems
Assignee: Phillips Petroleum Co
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Filing: 1958-08-27
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Granted: 1962-05-15
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Expires: 1978-08-27
Abstract
No abstract record available.
Inventors
- 👤 Donald E Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:06
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0295; B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4227; C; C07; C07C; C07C7/00; C07C7/04; F25J3/0204; F25J3/0219; F25J3/0228; F25J3/0233; F25J3/0238; F25J3/0242; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/62; F25J2280/00; F25J2280/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
IN THE SEPARATION OF A MIXTURE TO RECOVER A DESIRED PRODUCT IN A MULTI-UNIT FRACTIONATION SYSTEM HAVING AT LEAST TWO FRACTIONATION COLUMNS PERFORMING SIMULAR FRACTIONATIONS, THE METHOD OF CONTROLLING SAID SEPARATION COMCOMPRISING MEASUREING THE TOTAL LOSS OF SAID DESIRED PRODUCT FROM EACH OF SAID FRACTIONATION COLUMNS PERFORMING SIMULAR FRACTIONATIONS, MAINTAINING THE PURITY OF SAID DESIRED PRODUCT OBTAINED AS A PRODUCT STREAM FROM ONE OF SAID FRACTIONATION COLUMNS PERFORMING SIMILAR FRACTIONATIONS SUBSTANTIALLY CONSTANT BY REGUALTING THE LEVEL OF OPERATION OF SAID FRACTIONATION COLUMN, AND PERIODICALLY ADJUSTING THE LEVEL OF OPERATION OF THE REMAINDER OF SAID FRACTIONATION COLUMNS PERFORMINNG SIMULAR FRACTIONATIONS UNTIL THE MINIMUM TOTAL LOSS OF SAID DESIRED PRODUCT FROM SAID FRACTIONATION SYSTEM IS OBTAINED.
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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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |