US2554413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for catalytic cracking of hydrocarbons
Assignee: Sinclair Refining Co
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Filing: 1945-07-10
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Granted: 1951-05-22
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Expires: 1965-07-10
Abstract
No abstract record available.
Inventors
- 👤 Herman C Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:12
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/14; C10G11/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
AN APPARATUS FOR CONTACTING A GAS WITH PARTICLE-FORM SOLID MATERIAL COMPRISING A CHAMBER HAVING A CLOSED BOTTOM TERMINATING INA DISCHARGE DUCT, MEANS TO SUPPLY PARTICLE-FORM SOLID MATERIAL TO THE UPPER PORTION OF THE CHAMBER, MEANS TO SUPPLY GAS TO SAID CHAMBER AND MEANS TO REMOVE CONTACTED GAS THEREFROM, AT LEAST TWO HORIZONTAL VERTICALLY SPACED PARTIONING PLATES ACROSS THE LOWER PORTION OF THE CHAMBER, THE UPPERMOST PARTITIONING PLATE HAVING A PLURALITY OF UNIFORMLY DISTRIBUTED APERTURES THEREIN AND SUCCESSIVE PARTITIONING PLATES BELOW SAID FIRST PARTITIONING PLATE HAVING PROGRESSIVELY DECREASING NUMBERS OF APERTURES THEREIN, SAID APERTURES IN ANY ONE OF SAID SUCCESSIVE PARTIONING PLATES BEING HORIZONTALLY STAGGERED WITH RESPECT TO APERTURES IN THE PARTIONING PLATE THEREABOVE, AND UPSTANDING FLOW DIRECTING MEANS FORMED BY VERTICALLY EXTENDING INTERSECTING PLATES OVER APERTURES
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) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |