US2746909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-01-31
•
Granted: 1956-05-22
•
Expires: 1975-01-31
Abstract
No abstract record available.
Inventors
- 👤 Charles E Hemminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:42
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/10; C10G35/14; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A CONTINUOUS METHOD FOR HYDROFORMING NAPHTHAS WHICH COMPRISES PROVIDING A FLUIDIZED BED OF A PLATINUMCONTAINING CATALYST IN A HYDROFORMING ZONE, CONTACTING THE SAID CATALYST IN THE SAID ZONE WITH NAPHTHAS AND ADDED DRY SUBSTANTIALLY SULFUR-FREE HYDROGEN-CONTAINING GAS, MAINTAINING HYDROFORMING CONDITIONS OF TEMPERATURE AND CONTACT TIME IN SAID HYDROFORMING ZONE, MAINTAINING A PRESSURE OF FROM 150-325 P. S. I. IN SAID HYDROFORMING ZONE, REMOVING CATALYST CONTAMINATED WITH CARBONACEOUS AND OTHER DEPOSITS FROM SAID HYDROFORMING ZONE AND CONDUCTING IT TO A REGENERATION ZONE, FORMING THE CATALYST INTO A FLUIDIZED BED IN SAID LAST-NAMED ZONE AND TREATING IT WITH AN OXYGEN-CONTAINING GAS AT REGENERATION CONDITIONS OF TEMPERATURE, WITHDRAWING CATALYST FROM THE REGENERATION
Claim 2
Dependent Claim
109 words
A CONTINUOUS METHOD FOR HYDROFORMING NAPHTHAS WHICH COMPRISES PROVIDING A FLUIDIZED BED OF A PLATINUMCONTAINING CATALYST IN A HYDROFORMING ZONE, CONTACTING THE SAID CATALYST IN THE SAID ZONE WITH NAPHTHAS AND ADDED DRY SUBSTANTIALLY SULFUR-FREE HYDROGEN-CONTAINING GAS, MAINTAINING HYDROFORMING CONDITIONS OF TEMPERATURE AND CONTACT TIME IN SAID HYDROFORMING ZONE, MAINTAINING A PRESSURE OF FROM 150-325 P. S. I. IN SAID HYDROFORMING ZONE, REMOVING CATALYST CONTAMINATED WITH CARBONACEOUS AND OTHER DEPOSITS FROM SAID HYDROFORMING ZONE AND CONDUCTING IT TO A REGENERATION ZONE, FORMING THE CATALYST INTO A FLUIDIZED BED IN SAID LAST-NAMED ZONE AND TREATING IT WITH AN OXYGEN-CONTAINING GAS AT REGENERATION CONDITIONS OF TEMPERATURE, WITHDRAWING CATALYST FROM THE REGENERATION
References Cited (Backward Citations)
US2074311A
Cited
US2406112A
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US2445468A
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US2479110A
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US2700015A
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US2663676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |