US2670322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphtha reforming process
Assignee: Standard Oil Development Co
•
Filing: 1951-05-01
•
Granted: 1954-02-23
•
Expires: 1971-05-01
Abstract
No abstract record available.
Inventors
- 👤 Robert W Krebs
- 👤 Jr Alexis Voorhies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR NAPHTHA IMPROVEMENT WHICH COMPRISES PREHEATING A NAPHTHA WITH OLFFINIC CRACKED GASES IN CONTACT WITH A HYDROGEN TRANSFER CATALYST UNDER HYDROGEN TRANSFER CONDITIONS, PASSING THE TREATED NAPHTHA IN ADMIXTURE WITH FINELY DIVIDED HOT INERT CONTACT SOLIDS INTO A COKING ZONE WHERE THE INERT CONTACT SOLID ARE MAINTAINED AS A DENSE FLUIDIZED BED HAVING A LEVEL, SPRAYING A RESIDUUM INTO THE COKING ZONE ABOVE SAID DENSE BED AND CONVERTING THE REDISUUM TO VOLATILE PRODUCTS AND COKE, RECOVERING OLEFINIC CRACKED GASES FROM THE VAPOROUS REACTION PRODUCTS AND RECYCLING THE RECOVERED OLEFINIC CRACKED GASES TO SAID NAPHTHA PRETREATING STEP.
Claim 2
Dependent Claim
98 words
A PROCESS FOR NAPHTHA IMPROVEMENT WHICH COMPRISES PREHEATING A NAPHTHA WITH OLFFINIC CRACKED GASES IN CONTACT WITH A HYDROGEN TRANSFER CATALYST UNDER HYDROGEN TRANSFER CONDITIONS, PASSING THE TREATED NAPHTHA IN ADMIXTURE WITH FINELY DIVIDED HOT INERT CONTACT SOLIDS INTO A COKING ZONE WHERE THE INERT CONTACT SOLID ARE MAINTAINED AS A DENSE FLUIDIZED BED HAVING A LEVEL, SPRAYING A RESIDUUM INTO THE COKING ZONE ABOVE SAID DENSE BED AND CONVERTING THE REDISUUM TO VOLATILE PRODUCTS AND COKE, RECOVERING OLEFINIC CRACKED GASES FROM THE VAPOROUS REACTION PRODUCTS AND RECYCLING THE RECOVERED OLEFINIC CRACKED GASES TO SAID NAPHTHA PRETREATING STEP.
References Cited (Backward Citations)
US2284468A
Cited
US2326186A
Cited
US2398074A
Cited
US2426870A
Cited
US2418534A
Cited
US2445328A
Cited
US2608526A
Cited
US2484381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |