US2994643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for detecting the change in the isothermal heat transfer capacity of a material in a fractionation system
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-02-08
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Granted: 1961-08-01
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Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 Jack W Smalling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:12
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/425; Y; Y10; Y10S; Y10S159/00; Y10S159/18; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE OPERATING OF A FRACTIONATING TOWER CONTAINING SPACED FRACTIONATING PLATES, THE METHOD FOR PREVENTING FLOODING OF SAID TOWER WHICH COMPRISES DETECTING A CHANGE IN THE SUBSTANTIALLY ISOTHERMAL HEAT TRANSFER CAPACITY OF THE MATERIAL IN THE NORMALLY VAPOR SPACE BETWEEN TWO ADJACENT FRACTIONATING PLATES AND REGULATING THE LOADING OF SAID TOWER IN RESPONSE TO THE SAID DETECTED CHANGE OF THE SAID MATERIAL IN SAID NORMALLY VAPOR SPACE.
Claim 2
Dependent Claim
67 words
IN THE OPERATING OF A FRACTIONATING TOWER CONTAINING SPACED FRACTIONATING PLATES, THE METHOD FOR PREVENTING FLOODING OF SAID TOWER WHICH COMPRISES DETECTING A CHANGE IN THE SUBSTANTIALLY ISOTHERMAL HEAT TRANSFER CAPACITY OF THE MATERIAL IN THE NORMALLY VAPOR SPACE BETWEEN TWO ADJACENT FRACTIONATING PLATES AND REGULATING THE LOADING OF SAID TOWER IN RESPONSE TO THE SAID DETECTED CHANGE OF THE SAID MATERIAL IN SAID NORMALLY VAPOR SPACE.
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |