US3038843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation process and apparatus
Assignee: Union Oil Company of California
•
Filing: 1957-08-30
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Granted: 1962-06-12
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Expires: 1977-08-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:25
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/32; B01D3/322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A DISTILLATION PROCESS WHERREIN A HYDROCARBON FEEDSTOCK IS INTRODUCED AT AN INTERMEDIATE POINT IN A MULTISTAGE FRACTIONATING COLUMN INCLUDING A BOTTOMS REBOILER, AND IS SUBJECTED TO RECTIFICATION THERIN TO RECOER A RELATIVELY VOLATILE OVERHEAD FRACTION AND A LES VOLATILE BOTTOMS FRACTION, AND WHEREIN THE TEMPERATURE IN SAID REBOILER IS MAINTAINED AT PYROLYTIC TEMPERATURES ABOVE ABOUT 600*F. WHEREBY VOLATILE, POLYMER-FORMING DECOMPOSITION PRODUCTS ARE PRODUCED AND NORMALLY DISTILLED OVERHEAD RESULTING IN AN UNSTABLE DISTILLATE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING SAID FEEDSTOCK WHILE FRACTIONATING THE SAME TO INTENSE IONIZING RADIATION IN THE MIDSECTION OF SAID COLUMN, SAID REBOILER AND THE TOPMOST AND BOTTOMMOST DISTILLATION ZONES IN SAID FRACTIONATING COLUMN BEING MAINTAINED FREE OF RADIATION, THEREBY CONVERTING SAID VOLATILE DECOMPOSITION PRODUCTS TO LESS VOLATILE
Claim 2
Dependent Claim
121 words
IN A DISTILLATION PROCESS WHERREIN A HYDROCARBON FEEDSTOCK IS INTRODUCED AT AN INTERMEDIATE POINT IN A MULTISTAGE FRACTIONATING COLUMN INCLUDING A BOTTOMS REBOILER, AND IS SUBJECTED TO RECTIFICATION THERIN TO RECOER A RELATIVELY VOLATILE OVERHEAD FRACTION AND A LES VOLATILE BOTTOMS FRACTION, AND WHEREIN THE TEMPERATURE IN SAID REBOILER IS MAINTAINED AT PYROLYTIC TEMPERATURES ABOVE ABOUT 600*F. WHEREBY VOLATILE, POLYMER-FORMING DECOMPOSITION PRODUCTS ARE PRODUCED AND NORMALLY DISTILLED OVERHEAD RESULTING IN AN UNSTABLE DISTILLATE, THE IMPROVEMENT WHICH COMPRISES SUBJECTING SAID FEEDSTOCK WHILE FRACTIONATING THE SAME TO INTENSE IONIZING RADIATION IN THE MIDSECTION OF SAID COLUMN, SAID REBOILER AND THE TOPMOST AND BOTTOMMOST DISTILLATION ZONES IN SAID FRACTIONATING COLUMN BEING MAINTAINED FREE OF RADIATION, THEREBY CONVERTING SAID VOLATILE DECOMPOSITION PRODUCTS TO LESS VOLATILE
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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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |