US2834720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granular solids withdrawal method and apparatus
Assignee: ExxonMobil Oil Corp
•
Filing: 1953-08-26
•
Granted: 1958-05-13
•
Expires: 1973-08-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph I Savoca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/002; B01D; B01D15/00; B01D15/02; B01D15/08; B01D15/10; B01D15/18; B01D15/1892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD FOR THE CONTROLLED WITHDRAWAL OF GRANULAR SOLIDS FROM A LIQUID HYDROCARBON-GRANULAR SOLIDS CONTACTING ZONE, WHICH COMPRISES: PASSING A LIQUID HYDROCARBON-GRANULAR SOLIDS STREAM DOWNWARDLY FROM THE CONTACTING ZONE AS A SLURRY STREAM FLOWING IN OTHER THAN VISCOUS FLOW THROUGH A CONFINED PASSAGE, REMOVING SUFFICIENT LIQUID HYDROCARBON FROM SAID STREAM WHILE IN SAID PASSAGE TO CONVERT THE STREAM INTO VISCOUS FLOW, INTERPOSING AN OBSTRUCTION TO FLOW IN SAID PASSAGE AFTER SAID STREAM IS IN VISCOUS FLOW AND VARYING THE DEGREE OF OBSTRUCTION TO VARY THE RATE OF FLOW OF THE GANULAR SOLIDS THROUGH SAID PASSAGE.
Claim 2
Independent Claim
95 words
A METHOD FOR THE CONTROLLED WITHDRAWAL OF GRANULAR SOLIDS FROM A LIQUID HYDROCARBON-GRANULAR SOLIDS CONTACTING ZONE, WHICH COMPRISES: PASSING A LIQUID HYDROCARBON-GRANULAR SOLIDS STREAM DOWNWARDLY FROM THE CONTACTING ZONE AS A SLURRY STREAM FLOWING IN OTHER THAN VISCOUS FLOW THROUGH A CONFINED PASSAGE, REMOVING SUFFICIENT LIQUID HYDROCARBON FROM SAID STREAM WHILE IN SAID PASSAGE TO CONVERT THE STREAM INTO VISCOUS FLOW, INTERPOSING AN OBSTRUCTION TO FLOW IN SAID PASSAGE AFTER SAID STREAM IS IN VISCOUS FLOW AND VARYING THE DEGREE OF OBSTRUCTION TO VARY THE RATE OF FLOW OF THE GANULAR SOLIDS THROUGH SAID PASSAGE.
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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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |