US2849386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for using a thermo-siphon reboiler in a fractionator
Assignee: Phillips Petroleum Co
•
Filing: 1953-10-09
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Granted: 1958-08-26
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Expires: 1973-10-09
Abstract
No abstract record available.
Inventors
- 👤 Forrest E Gilmore
- 👤 Robert D Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:04
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/32; B01D3/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A FRACTIONATING COLUMN HAVING A KETTLE SECTION WITH A GENERALLY CYLINDRICAL WALL STRUCTURE THE IMPROVEMENT COMPRISING, IN COMBINATION, A THERMO-SIPHON REBOILER REMOVABLY DISPOSED WITHIN SAID KETTLE SECTION, SAID REBOILER HAVING AN OVER-ALL LENGTH GREATER THAN THE DIAMETER OF SAID KETTLE SECTION; AND A MANHOLE IN THE WALL OF SAID KETTLE SECTION, SAID MANHOLE INCLUDING A CONDUIT MEMBER JOINED TO SAID WALL AT AN ANGLE OF LESS THAN 90 DEGREES AND FORMING A PASSAGE COMMUNICATING WITH SAID KETTLE SECTION, SAID PASSAGE HAVING A CROSS SECTION APPROXIMATELY EQUAL TO BUT SUFFICIENTLY GREATER THAN THE CROSS SECTION OF SAID REBOILER TO PERMIT EASY LENGTHWISE
Claim 2
Dependent Claim
102 words
IN A FRACTIONATING COLUMN HAVING A KETTLE SECTION WITH A GENERALLY CYLINDRICAL WALL STRUCTURE THE IMPROVEMENT COMPRISING, IN COMBINATION, A THERMO-SIPHON REBOILER REMOVABLY DISPOSED WITHIN SAID KETTLE SECTION, SAID REBOILER HAVING AN OVER-ALL LENGTH GREATER THAN THE DIAMETER OF SAID KETTLE SECTION; AND A MANHOLE IN THE WALL OF SAID KETTLE SECTION, SAID MANHOLE INCLUDING A CONDUIT MEMBER JOINED TO SAID WALL AT AN ANGLE OF LESS THAN 90 DEGREES AND FORMING A PASSAGE COMMUNICATING WITH SAID KETTLE SECTION, SAID PASSAGE HAVING A CROSS SECTION APPROXIMATELY EQUAL TO BUT SUFFICIENTLY GREATER THAN THE CROSS SECTION OF SAID REBOILER TO PERMIT EASY LENGTHWISE
References Cited (Backward Citations)
GB189423961A
Cited
US718209A
Cited
US988661A
Cited
US1420366A
Cited
US1477328A
Cited
US1485601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |