US2775544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of catalytic cracking feed stocks
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-02-28
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Granted: 1956-12-25
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Expires: 1975-02-28
Abstract
No abstract record available.
Inventors
- 👤 Hampton G Corneil
- 👤 Richard S Manne
- 👤 George R L Shepherd
- 👤 Armand M Souby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:19
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/04; C10G21/00; C10G21/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR INCREASING THE YIELDS OF CATALYTIC CRACKING STOCK OBTAINABLE FROM A REDUCED CRUDE PETROLEUM FEED STOCK BOILING ABOVE ABOUT 600*F. WHICH COMPRISES SUBJECTING SAID CRUDE TO CONDITIONS OF HYDRODESULFURIZATION TO FORM A HYDRODESULFURIZED PRODUCT, REMOVING A FIRST GAS OIL FRACTION AND LIGHTER FRACTIONS FROM SAID PRODUCTS, SUBJECTING SAID HYDRODESULFURIZED PRODUCT AFTER REMOVAL OF GAS OIL TO DEASPHALTING CONDITIONS TO OBTAIN A SECOND GAS OIL FRACTION AND COMBINING SAID GAS OIL FRACTIONS TO OBTAIN AUGMENTED YIELDS OF CATALYTIC CRACKING STOCK.
Claim 2
Independent Claim
81 words
A METHOD FOR INCREASING THE YIELDS OF CATALYTIC CRACKING STOCK OBTAINABLE FROM A REDUCED CRUDE PETROLEUM FEED STOCK BOILING ABOVE ABOUT 600*F. WHICH COMPRISES SUBJECTING SAID CRUDE TO CONDITIONS OF HYDRODESULFURIZATION TO FORM A HYDRODESULFURIZED PRODUCT, REMOVING A FIRST GAS OIL FRACTION AND LIGHTER FRACTIONS FROM SAID PRODUCTS, SUBJECTING SAID HYDRODESULFURIZED PRODUCT AFTER REMOVAL OF GAS OIL TO DEASPHALTING CONDITIONS TO OBTAIN A SECOND GAS OIL FRACTION AND COMBINING SAID GAS OIL FRACTIONS TO OBTAIN AUGMENTED YIELDS OF CATALYTIC CRACKING STOCK.
References Cited (Backward Citations)
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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) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |