Patent US2728632A successfully refreshed from Google Patents.
US2728632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of solids circulation within fluid-solids contacting zones
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1951-11-30
•
Granted: 1955-12-27
•
Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 George L Matheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:25
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005; B01J8/0065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF CONTACTING FLUIDS WITH SUBDIVIDED SOLIDS, WHICH COMPRISES FORMING A TURBULENT SUSPENSION OF SAID SOLIDS IN SAID FLUIDS FLOWING UPWARDLY THROUGH A CONTACTING ZONE, AND WHILE STILL IN SAID CONTACTING ZONE PASSING SAID SUSPENSION UPWARDLY THROUGH AN EXTENDED NARROWLY CONFINED INCLINED PATH WHICH DEVIATES FROM THE VERTICAL BY BETWEEN ABOUT 1* AND ABOUT 30* AND HAS A LENGTH OVER DIAMETER RATIO OF AT LEAST ABOUT 4:1.
Claim 2
Dependent Claim
68 words
THE PROCESS OF CONTACTING FLUIDS WITH SUBDIVIDED SOLIDS, WHICH COMPRISES FORMING A TURBULENT SUSPENSION OF SAID SOLIDS IN SAID FLUIDS FLOWING UPWARDLY THROUGH A CONTACTING ZONE, AND WHILE STILL IN SAID CONTACTING ZONE PASSING SAID SUSPENSION UPWARDLY THROUGH AN EXTENDED NARROWLY CONFINED INCLINED PATH WHICH DEVIATES FROM THE VERTICAL BY BETWEEN ABOUT 1* AND ABOUT 30* AND HAS A LENGTH OVER DIAMETER RATIO OF AT LEAST ABOUT 4:1.
References Cited (Backward Citations)
US947642A
Cited
US1845058A
Cited
US2403375A
Cited
US2364145A
Cited
US2488033A
Cited
US2464812A
Cited
US2455561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |