US2729552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of contacting gasiform carbonaceous solids
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1949-12-24
•
Granted: 1956-01-03
•
Expires: 1969-12-24
Abstract
No abstract record available.
Inventors
- 👤 Karl J Nelson
- 👤 Edward J Gornowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:13
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/482; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE PROCESS OF GASIFYING SUBDIVIDED CARBONACEOUS SOLIDS IN THE FORM OF A DENSE TUBULENT MASS OF SOLIDS CONTAINING A SUBSTANTIAL PROPORTION OF PARTICLES SUBSTANTIALLY LARGER THAN 40 MICRONS IN DIAMETER FLUIDIZED BY UPWARDLY FLOWING GASES IN A GASIFICATION ZONE, THE IMPROVEMENT WHICH COMPRISES REDUCING THE ENTRAINMENT OF SOLIDS FROM SAID MASS IN SAID GASES BY MAINTAINING THE CONCENTRATION OF PARTICLES OF -40 MICRONS SIZE WITHIN SAID MASS AT A LEVEL ADEQUATE FOR SMOOTH FLUIDIZATION BUT SUBSTANTIALLY ABOVE THAT AT WHICH SAID ENTRAINMENT IS AT A MAXIMUM.
Claim 2
Dependent Claim
87 words
IN THE PROCESS OF GASIFYING SUBDIVIDED CARBONACEOUS SOLIDS IN THE FORM OF A DENSE TUBULENT MASS OF SOLIDS CONTAINING A SUBSTANTIAL PROPORTION OF PARTICLES SUBSTANTIALLY LARGER THAN 40 MICRONS IN DIAMETER FLUIDIZED BY UPWARDLY FLOWING GASES IN A GASIFICATION ZONE, THE IMPROVEMENT WHICH COMPRISES REDUCING THE ENTRAINMENT OF SOLIDS FROM SAID MASS IN SAID GASES BY MAINTAINING THE CONCENTRATION OF PARTICLES OF -40 MICRONS SIZE WITHIN SAID MASS AT A LEVEL ADEQUATE FOR SMOOTH FLUIDIZATION BUT SUBSTANTIALLY ABOVE THAT AT WHICH SAID ENTRAINMENT IS AT A MAXIMUM.
References Cited (Backward Citations)
US2534853A
Cited
US1913968A
Cited
US1937552A
Cited
GB585354A
Cited
US2436938A
Cited
US2554263A
Cited
US2627499A
Cited
US2627522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |