US2938857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split hydrorefining of feed to catalytic cracking operation
Assignee: Sunoco Inc
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Filing: 1956-11-08
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Granted: 1960-05-31
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Expires: 1976-11-08
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Johnson
- 👤 Henry E Reif
- 👤 Schneider Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:58
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/14; C10G65/16; C10G69/00; C10G69/02; C10G69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS FOR HYDROREFINING PETROLEUM WHICH COMPRISES SEPARATING CRUDE PETROLEUM INTO A DISTILLATE FRACTION AND RESIDUAL FRACTION, CONTACTING THE DISTILLATE FRACTION UNDER HYDROREFINING CONDITIONS WITH A SOLID HYDROGENATION CATALYST HAVING PARTICLE SIZE WITHIN THE APPROXIMATE RANGE FROM 4 TO 20 MESH, CONTACTING THE RESIDUAL FRACTION UNDER HYDROREFINING CONDITIONS WITH A HYDROGENATION CATALYST HAVING PARTICLE SIZE WITHIN THE APPROXIMATE RANGE FROM 8 TO 40 MESH, THE AVERAGE PARTICLE SIZE OF THE LATTER CATALYST BEING SMALLER THAN THE AVERAGE PARTICLE SIZE OF THE FIRST-NAMED CATALYST, AND FEEDING THE COMBINED HYDROREFINED PRODUCTS TO BE A CATALYTIC CRACKING ZONE FOR CRACKING SAID PRODUCTS.
Claim 2
Dependent Claim
99 words
THE PROCESS FOR HYDROREFINING PETROLEUM WHICH COMPRISES SEPARATING CRUDE PETROLEUM INTO A DISTILLATE FRACTION AND RESIDUAL FRACTION, CONTACTING THE DISTILLATE FRACTION UNDER HYDROREFINING CONDITIONS WITH A SOLID HYDROGENATION CATALYST HAVING PARTICLE SIZE WITHIN THE APPROXIMATE RANGE FROM 4 TO 20 MESH, CONTACTING THE RESIDUAL FRACTION UNDER HYDROREFINING CONDITIONS WITH A HYDROGENATION CATALYST HAVING PARTICLE SIZE WITHIN THE APPROXIMATE RANGE FROM 8 TO 40 MESH, THE AVERAGE PARTICLE SIZE OF THE LATTER CATALYST BEING SMALLER THAN THE AVERAGE PARTICLE SIZE OF THE FIRST-NAMED CATALYST, AND FEEDING THE COMBINED HYDROREFINED PRODUCTS TO BE A CATALYTIC CRACKING ZONE FOR CRACKING SAID PRODUCTS.
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |