US2725344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upgrading of naphthas
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-09-11
•
Granted: 1955-11-29
•
Expires: 1972-09-11
Abstract
No abstract record available.
Inventors
- 👤 Merrell R Fenske
- 👤 Jennings H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:42
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07D301/22; C10; C10G; C10G63/00; C10G63/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS FOR UP GRADING A NAPHTHA HYDROCARBON FEED CONTAINING NORMALLY LIQUID HYDROCARBONS OF THE CLASS CONSISTING OF NORMAL PARAFFINS AND CYCLOPARAFFINS TO FORM OLEFINS AND EPOXIDES OF THE SAME NUMBER OF CARBON ATOMS AS THE FEED HYDROCARBON AS PRINCIPAL CONVERSION PRODUCTS THEREOF BY NON-CATALYTIC OXIDATION, WHICH COMPRISES PASSING A STREAM OF THE HYDROCARBON FEED IN VAPOR PHASE THROUGH A CONVERSION ZONE MAINTAINED AT A PRESSURE BETWEEN 0 AND 100 P.S.I.G. AND A REACTION TEMPERATURE BETWEEN 275* C. AND 480* C., INJECTING OXYGEN GAS INTO THE STREAM OF HYDROCARBON VAPOR IN THE CONVERSION ZONE TO FORM A MIXTURE HAVING A MOLAL OXYGEN TO HYDROCARBON RATIO AT ANY POINT NOT ABOVE 0.5, THE TOTAL AMOUNT OF OXYGEN SO ADMIXED AND REACTED WITH SAID HYDROCARBON FEED BEING BETWEEN ABOUT 0.3 AND 1.5 MOLES OF OXYGEN PER MOLE OF HYDROCARBON, MAINTAINING THE HYDROCARBON IN CONTACT WITH THE ADMIXED OXYGEN FOR A CALCULATED TOTAL
Claim 2
Dependent Claim
150 words
A PROCESS FOR UP GRADING A NAPHTHA HYDROCARBON FEED CONTAINING NORMALLY LIQUID HYDROCARBONS OF THE CLASS CONSISTING OF NORMAL PARAFFINS AND CYCLOPARAFFINS TO FORM OLEFINS AND EPOXIDES OF THE SAME NUMBER OF CARBON ATOMS AS THE FEED HYDROCARBON AS PRINCIPAL CONVERSION PRODUCTS THEREOF BY NON-CATALYTIC OXIDATION, WHICH COMPRISES PASSING A STREAM OF THE HYDROCARBON FEED IN VAPOR PHASE THROUGH A CONVERSION ZONE MAINTAINED AT A PRESSURE BETWEEN 0 AND 100 P.S.I.G. AND A REACTION TEMPERATURE BETWEEN 275* C. AND 480* C., INJECTING OXYGEN GAS INTO THE STREAM OF HYDROCARBON VAPOR IN THE CONVERSION ZONE TO FORM A MIXTURE HAVING A MOLAL OXYGEN TO HYDROCARBON RATIO AT ANY POINT NOT ABOVE 0.5, THE TOTAL AMOUNT OF OXYGEN SO ADMIXED AND REACTED WITH SAID HYDROCARBON FEED BEING BETWEEN ABOUT 0.3 AND 1.5 MOLES OF OXYGEN PER MOLE OF HYDROCARBON, MAINTAINING THE HYDROCARBON IN CONTACT WITH THE ADMIXED OXYGEN FOR A CALCULATED TOTAL
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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) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |