US2610141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extractive distillation process
Assignee: Standard Oil Development Co
•
Filing: 1949-04-01
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Granted: 1952-09-09
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Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Drout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN THE SEPARATION OF ORGANIC COMPONENT A FROM ORGANIC COMPONENT B BY EXTRACTIVE DISTILLATION WHEREIN COMPONENTS A AND B ARE INTRODUCED INTO A FRACTIONAL DISTILLATION ZONE AT AN INTERMEDIATE POINT THEREOF, WHEREIN A DISTILLATION SOLVENT IS INTRODUCED INTO THE FRACTIONAL DISTILLATION ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF COMPONENTS A AND B AND HEAT APPLIED TO EFFECT VAPORIZATION OF THE COMPONENTS ONE OF WHICH IS REMOVED OVERHEAD FROM THE EXTRACTIVE DISTILLATION ZONE AS A VAPOR AND THE OTHER AS BOTTOMS DISSOLVED IN THE SOLVENT, AND WHEREIN THE OVERHEAD CONDENSES INTO A SOLVENT PHASE AND A NON-SOLVENT PHASE CONTAINING QUANTITIES OF THE BOTTOMS COMPONENT, THE IMPROVEMENT WHICH
Claim 2
Dependent Claim
109 words
IN THE SEPARATION OF ORGANIC COMPONENT A FROM ORGANIC COMPONENT B BY EXTRACTIVE DISTILLATION WHEREIN COMPONENTS A AND B ARE INTRODUCED INTO A FRACTIONAL DISTILLATION ZONE AT AN INTERMEDIATE POINT THEREOF, WHEREIN A DISTILLATION SOLVENT IS INTRODUCED INTO THE FRACTIONAL DISTILLATION ZONE AT A POINT ABOVE THE POINT OF INTRODUCTION OF COMPONENTS A AND B AND HEAT APPLIED TO EFFECT VAPORIZATION OF THE COMPONENTS ONE OF WHICH IS REMOVED OVERHEAD FROM THE EXTRACTIVE DISTILLATION ZONE AS A VAPOR AND THE OTHER AS BOTTOMS DISSOLVED IN THE SOLVENT, AND WHEREIN THE OVERHEAD CONDENSES INTO A SOLVENT PHASE AND A NON-SOLVENT PHASE CONTAINING QUANTITIES OF THE BOTTOMS COMPONENT, THE IMPROVEMENT WHICH
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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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |