Patent US2911358A successfully refreshed from Google Patents.
US2911358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming with recycling of part of the products
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-06-30
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Granted: 1959-11-03
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Expires: 1975-06-30
Abstract
No abstract record available.
Inventors
- 👤 Marjoric W Leigh
- 👤 Jr Albert B Welty
- 👤 Richard W Sage
- 👤 Randolph M Bailly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:57
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A PROCESS OF HYDROFORMING A NAPHTHA IN A REACTION ZONE CONTAINING A FIXED BED OF A CATALYST WHICH IS A PLATINUM GROUP METAL CARRIED ON ALUMINA AND CONTAINING A SMALL AMOUNT OF HALOGEN, THE IMPROVEMENT WHICH COMPRISES PREHEATING A LOW SULFUR NAPHTHA STREAM TO A TEMPERATURE IN THE RANGE OF ABOUT 900* TO 1000*F., PASSING THE THUS PREHEATED NAPHTAHA STREAM TO AN INLET OF SAID REACTION ZONE FROM WHICH HYDROGEN GAS NAPHTHA VAPORS PASS THROUGH SAID FIXED BED OF CATALYST TO AN OUTLET OF SAID REACTION ZONE BY WHICH HYDROGEN GAS AND HYDROFORMED NAPHTHA PRODUCT IS REMOVED AS A HOT VAPORIFORM EFFULENT, RECYCLING A PORTION OF SAID HOT EFFULENT UNCOOLED AT A SUFFICIENT RECYCLE RATE AND TEMPERATURE TO SAID INLET OF THE REACTION ZONE FOR MIXING WITH THE PREHEATED NAPHTHA FEED STREAM TO MAKE THE RESULTING HYDROGEN GAS AND NAPHTHA VAPOR MIXTURE HAVE A TEMPERATURE IN THE RANGE OF 900* TO 1000*F. ON ENTERING THE FIXED BED OF CATALYST
Claim 2
Dependent Claim
160 words
IN A PROCESS OF HYDROFORMING A NAPHTHA IN A REACTION ZONE CONTAINING A FIXED BED OF A CATALYST WHICH IS A PLATINUM GROUP METAL CARRIED ON ALUMINA AND CONTAINING A SMALL AMOUNT OF HALOGEN, THE IMPROVEMENT WHICH COMPRISES PREHEATING A LOW SULFUR NAPHTHA STREAM TO A TEMPERATURE IN THE RANGE OF ABOUT 900* TO 1000*F., PASSING THE THUS PREHEATED NAPHTAHA STREAM TO AN INLET OF SAID REACTION ZONE FROM WHICH HYDROGEN GAS NAPHTHA VAPORS PASS THROUGH SAID FIXED BED OF CATALYST TO AN OUTLET OF SAID REACTION ZONE BY WHICH HYDROGEN GAS AND HYDROFORMED NAPHTHA PRODUCT IS REMOVED AS A HOT VAPORIFORM EFFULENT, RECYCLING A PORTION OF SAID HOT EFFULENT UNCOOLED AT A SUFFICIENT RECYCLE RATE AND TEMPERATURE TO SAID INLET OF THE REACTION ZONE FOR MIXING WITH THE PREHEATED NAPHTHA FEED STREAM TO MAKE THE RESULTING HYDROGEN GAS AND NAPHTHA VAPOR MIXTURE HAVE A TEMPERATURE IN THE RANGE OF 900* TO 1000*F. ON ENTERING THE FIXED BED OF CATALYST
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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |