Patent US2696464A successfully refreshed from Google Patents.
US2696464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling the separation of conjugated double bond compounds from multicomponent mixtures
Assignee: Phillips Petroleum Co
•
Filing: 1949-01-27
•
Granted: 1954-12-07
•
Expires: 1969-01-27
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Mathis
- 👤 Maynard Van Perry
- 👤 Jr J B Mccombs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:26
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/40; C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/08; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A SYSTEM FOR CONTROLLING THE SEPARATION OF A COMPOUND CONTAINING CONJUGATED DOUBLE BONDS FROM A MIXTURE BY MEANS OF EXTRACTIVE DISTILLATION, IN COMBINATION, MEANS FOR TAKING A SAMPLE OF THE MIXTURE FROM A SELECTED INTERMEDIATE PORTION OF THE DISTILLATION MEANS, A SPECTROPHOTOMETER COMPRISING A SOURCE OF ULTRA-VIOLET LIGHT, A CELL TO WHICH SAID SAMPLE IS SUPPLIED, AND A PHOTOCELL; MEANS FOR ADMITTING AIR AND A SAMPLE ALTERNATELY TO SAID SPECTROPHOTOMETER SAMPLE CELL; TIMING MEANS FOR OPERATING SAID ADMITTING MEANS, AN ELECTROPNEUMATIC CONTROL COMPRISING A PAIR OF ADJUSTABLE POTENTIOMETERS AND ELECTROPNEUMATIC CONTROL MEANS FOR ADJUSTING ONE OF SAID POTENTIOMETERS WHILE AIR IS ADMITTED TO SAID SAMPLE CELL AND FOR ADJUSTING THE OTHER OF SAID POTENTIOMETERS WHEN A SAMPLE IS ADMITTED TO SAID SAMPLE CELL TO THEREBY BALANCE THE INSTRUMENT; AND MEANS UNDER CONTROL OF SAID ELECTROPNEUMATIC MEANS FOR CONTROLLING THE HEAT INPUT TO THE EXTRACTIVE DISTILLATION MEANS.
Claim 2
Dependent Claim
147 words
IN A SYSTEM FOR CONTROLLING THE SEPARATION OF A COMPOUND CONTAINING CONJUGATED DOUBLE BONDS FROM A MIXTURE BY MEANS OF EXTRACTIVE DISTILLATION, IN COMBINATION, MEANS FOR TAKING A SAMPLE OF THE MIXTURE FROM A SELECTED INTERMEDIATE PORTION OF THE DISTILLATION MEANS, A SPECTROPHOTOMETER COMPRISING A SOURCE OF ULTRA-VIOLET LIGHT, A CELL TO WHICH SAID SAMPLE IS SUPPLIED, AND A PHOTOCELL; MEANS FOR ADMITTING AIR AND A SAMPLE ALTERNATELY TO SAID SPECTROPHOTOMETER SAMPLE CELL; TIMING MEANS FOR OPERATING SAID ADMITTING MEANS, AN ELECTROPNEUMATIC CONTROL COMPRISING A PAIR OF ADJUSTABLE POTENTIOMETERS AND ELECTROPNEUMATIC CONTROL MEANS FOR ADJUSTING ONE OF SAID POTENTIOMETERS WHILE AIR IS ADMITTED TO SAID SAMPLE CELL AND FOR ADJUSTING THE OTHER OF SAID POTENTIOMETERS WHEN A SAMPLE IS ADMITTED TO SAID SAMPLE CELL TO THEREBY BALANCE THE INSTRUMENT; AND MEANS UNDER CONTROL OF SAID ELECTROPNEUMATIC MEANS FOR CONTROLLING THE HEAT INPUT TO THE EXTRACTIVE DISTILLATION MEANS.
References Cited (Backward Citations)
US1759996A
Cited
US2246563A
Cited
US2415006A
Cited
US2386831A
Cited
US2386830A
Cited
US2459404A
Cited
US2462995A
Cited
US2462946A
Cited
US2499626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |