US2739845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyance of granular solids
Assignee: Union Oil Company of California
•
Filing: 1951-01-26
•
Granted: 1956-03-27
•
Expires: 1971-01-26
Abstract
No abstract record available.
Inventors
- 👤 Clyde H O Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:52
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR CONVEYANCE OF GRANULAR SOLIDS OF VARIABLE PHYSICAL CHARACTERISTICS UNDER VARIABLE CONDITIONS OF OPERATION WHICH COMPRISES INTRODUCING SOLIDS TO BE CONVEYED INTO THE ENTRANCE OF AN ELONGATED CONVEYANCE ZONE HAVING AN INCREASING CROSS-SECTIONAL ARTEA IN THE DIRECTION OF FLOW, INTRODUCING THERINTO A CONVEYANCE FLUID UNDER PRESSURE, FLOWING SAID CONVEYANCE FLUID CONCURRENTLY WITH SAID SOLIDS THROUGH SAID CONVEYANCE ZONE AT A RATE SUFFICIENT TO ESTABLISH A PRESSURE GRADIENT
Claim 2
Dependent Claim
69 words
A PROCESS FOR CONVEYANCE OF GRANULAR SOLIDS OF VARIABLE PHYSICAL CHARACTERISTICS UNDER VARIABLE CONDITIONS OF OPERATION WHICH COMPRISES INTRODUCING SOLIDS TO BE CONVEYED INTO THE ENTRANCE OF AN ELONGATED CONVEYANCE ZONE HAVING AN INCREASING CROSS-SECTIONAL ARTEA IN THE DIRECTION OF FLOW, INTRODUCING THERINTO A CONVEYANCE FLUID UNDER PRESSURE, FLOWING SAID CONVEYANCE FLUID CONCURRENTLY WITH SAID SOLIDS THROUGH SAID CONVEYANCE ZONE AT A RATE SUFFICIENT TO ESTABLISH A PRESSURE GRADIENT
References Cited (Backward Citations)
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US494274A
Cited
GB180397A
Cited
GB268667A
Cited
US2311564A
Cited
US2392765A
Cited
US2493911A
Cited
US2509983A
Cited
US2666731A
Cited
US2561771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |