US3128129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of catalyst circulation rate in a fluidized system
Assignee: Universal Oil Products Co
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Filing: 1961-06-26
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Granted: 1964-04-07
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Laurence O Stine
- 👤 Norman H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A PROCESSING SYSTEM WHEREIN SUBDIVIDED SOLID MATERIAL IS CONTINUOUSLY CIRCULATED FROM A FIRST CONTACTING ZONE TO A SECOND CONTACTING ZONE AND FRM THE LATTER ZONE TO THE FIRST ZONE AND WHEREIN SAID SUBDIVIDED MATERIAL IS COLLECTED IN A RELATIVELY COMPACT PAHSE IN A CONFINED COLUMN AFTER CONTRACT IN THE FIRST ZONE AND PRIOR TO TRANSFER THROUGH AN ADJUSTABLE RESTRICTION IN SAID COLUMN TO THE SECOND ZONE, THE IMPRIVED METHOD OF CONTROLLING THE CIRCULATION RATE OF THE SOLID MATERIAL IN THE SYSTEM WHICH COMPRISES MEASURING VARIATIONS IN THE PRESSURE DIFFERENTIAL OF THE SOLID MATERIAL PHASE EXSISTING JUST ABOVE SAID RESTRICTION, MEASURING THE PRESSURE DIFFERENTIAL ACROSS SAID RESTRICTION, AND CONTINUOUSLY CONTROLLING AND ADJUSTING THE FLOW OF SOLID MATERIAL THROUGH SAID SYSTEM RESPON-
Claim 2
Dependent Claim
121 words
IN A PROCESSING SYSTEM WHEREIN SUBDIVIDED SOLID MATERIAL IS CONTINUOUSLY CIRCULATED FROM A FIRST CONTACTING ZONE TO A SECOND CONTACTING ZONE AND FRM THE LATTER ZONE TO THE FIRST ZONE AND WHEREIN SAID SUBDIVIDED MATERIAL IS COLLECTED IN A RELATIVELY COMPACT PAHSE IN A CONFINED COLUMN AFTER CONTRACT IN THE FIRST ZONE AND PRIOR TO TRANSFER THROUGH AN ADJUSTABLE RESTRICTION IN SAID COLUMN TO THE SECOND ZONE, THE IMPRIVED METHOD OF CONTROLLING THE CIRCULATION RATE OF THE SOLID MATERIAL IN THE SYSTEM WHICH COMPRISES MEASURING VARIATIONS IN THE PRESSURE DIFFERENTIAL OF THE SOLID MATERIAL PHASE EXSISTING JUST ABOVE SAID RESTRICTION, MEASURING THE PRESSURE DIFFERENTIAL ACROSS SAID RESTRICTION, AND CONTINUOUSLY CONTROLLING AND ADJUSTING THE FLOW OF SOLID MATERIAL THROUGH SAID SYSTEM RESPON-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |