US3202602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic operation and process control
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1961-12-26
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Granted: 1965-08-24
•
Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 John B Beaugh
- 👤 Lee M Johnson
- 👤 Leland W Pohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:55
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
140 words
IN A CONTINUOUS OIL PROCESS WHEREIN A SELECTED POUR POINT TEMPERATURE OF SAID OIL DETERMINES THE OPERATING CONDITIONS OF SAID PROCESS, A METHOD FOR AUTOMATICALLY CONTROLLING SAID PROCESS COMPRISING SEQUENTIALLY SAMPLING A PORTION OF SAID OIL, VIBRATING A PROBE IN SAID OIL WHILE COOLING SAID OIL SAMPLE, RECORDING AN ELECTRICAL SIGNAL GENERATED IN RESPONSE TO THE VIBRATIONAL ENERGY OF SAID PROBE, MEASURING THE TEMPERATURE OF SAID OIL SAMPLE COINCIDENT WITH A DEFINITE BREAK IN SAID RECORDED ELECTRICAL SIGNAL CAUSED BY A REDUCTION IN THE DAMPING ACTION OF SAID OIL ON SAID PROBE WHEREIN THE POUR POINT TEMPERATURE OF SAID OIL IS DETERMINED, COMPARING SAID DTERMINED POUR POINT TEMPERATURE WITH SAID DESIRED POUR POINT TEMPERATURE, AND CHANGING AN OPERATING CONDITION OF SAID PROCESS IN ACCORDANCE WITH SAID COMPARISON TO ACHIEVE SAID DESIRED POUR POINT TEMPERATURE IN THE OPERATION OF SAID PROCESS.
Claim 2
Dependent Claim
140 words
IN A CONTINUOUS OIL PROCESS WHEREIN A SELECTED POUR POINT TEMPERATURE OF SAID OIL DETERMINES THE OPERATING CONDITIONS OF SAID PROCESS, A METHOD FOR AUTOMATICALLY CONTROLLING SAID PROCESS COMPRISING SEQUENTIALLY SAMPLING A PORTION OF SAID OIL, VIBRATING A PROBE IN SAID OIL WHILE COOLING SAID OIL SAMPLE, RECORDING AN ELECTRICAL SIGNAL GENERATED IN RESPONSE TO THE VIBRATIONAL ENERGY OF SAID PROBE, MEASURING THE TEMPERATURE OF SAID OIL SAMPLE COINCIDENT WITH A DEFINITE BREAK IN SAID RECORDED ELECTRICAL SIGNAL CAUSED BY A REDUCTION IN THE DAMPING ACTION OF SAID OIL ON SAID PROBE WHEREIN THE POUR POINT TEMPERATURE OF SAID OIL IS DETERMINED, COMPARING SAID DTERMINED POUR POINT TEMPERATURE WITH SAID DESIRED POUR POINT TEMPERATURE, AND CHANGING AN OPERATING CONDITION OF SAID PROCESS IN ACCORDANCE WITH SAID COMPARISON TO ACHIEVE SAID DESIRED POUR POINT TEMPERATURE IN THE OPERATION OF SAID PROCESS.
Claim 3
Dependent Claim
17 words
A METHOD IN ACCORDANCE WITH CLAIM 1 IN WHICH THE PROCESS IS SOLVENT DEWAXING OF SAID OIL.
References Cited (Backward Citations)
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US1888431A
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US2003667A
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US2008570A
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US2340507A
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US2386831A
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US2459404A
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US3025232A
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US3090223A
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |