US2935464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroforming process with the addition of a nitrogenous base
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-12-31
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Granted: 1960-05-03
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Expires: 1974-12-31
Abstract
No abstract record available.
Inventors
- 👤 Richard H Dudley
- 👤 Robert B Long
- 👤 James C Rohrer
- 👤 Barney R Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:29
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE HYDROFORMING OF AN INITIAL NAPHTHA FEED FRACTION CONTAINING OVER 0.1 WEIGHT PERCENT OF SULFUR IN ADMIXTURE WITH HYDROGEN AT CONVERSION CONDITIONS OF TEMPERATURE AND PRESSURE AND IN THE PRESENCE OF A ACTIVE HYDROFORMING CATALYST, THE IMPROVEMENT WHICH COMPRISES MINIMIZING CRACKING REACTIONS BY ADDING A NITROGENOUS BASE IN AN AMOUNT BELOW 20 PARTS PER MILLION BASED ON NAPHTHA FEED TO THE REACTION ZONE DURING THE HYDROFORMING PROCESS, SAID NITROGENOUS BASE BEING IN ADDITION TO THE NITROGEN PRESENT IN THE INITIAL NAPHTHA FEED FRACTION TO BE REFORMED.
Claim 2
Dependent Claim
87 words
IN THE HYDROFORMING OF AN INITIAL NAPHTHA FEED FRACTION CONTAINING OVER 0.1 WEIGHT PERCENT OF SULFUR IN ADMIXTURE WITH HYDROGEN AT CONVERSION CONDITIONS OF TEMPERATURE AND PRESSURE AND IN THE PRESENCE OF A ACTIVE HYDROFORMING CATALYST, THE IMPROVEMENT WHICH COMPRISES MINIMIZING CRACKING REACTIONS BY ADDING A NITROGENOUS BASE IN AN AMOUNT BELOW 20 PARTS PER MILLION BASED ON NAPHTHA FEED TO THE REACTION ZONE DURING THE HYDROFORMING PROCESS, SAID NITROGENOUS BASE BEING IN ADDITION TO THE NITROGEN PRESENT IN THE INITIAL NAPHTHA FEED FRACTION TO BE REFORMED.
References Cited (Backward Citations)
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Cited
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US2752289A
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US2744053A
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US2717230A
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US2849377A
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US2766179A
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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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |