US2960546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization of aromatic hydrocarbons
Assignee: Millennium Petrochemicals Inc
•
Filing: 1957-03-11
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Granted: 1960-11-15
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 John F Nobis
- 👤 Lloyd M Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:33
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/14841
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A PROCESS FOR REDUCING THE THIOPHENE CONTENT OF AROMATIC HYDROCARBONS CONTAINING MORE THAN ONE PART PER MILLION, SAID AROMATIC HYDROCARBONS BEING SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, XYLENE, AND MIXTURES THEREOF, WHICH CONSISTS OF PASSING SAID AROMATIC HYDROCARBON FEED IN VAPOR FROM THROUGH AN AGITATED BED IN TURBULENT STATE COMPRISING METALLIC SODIUM DISPERSED ON A FINELY DIVIDED, SOLID, INERT CARRIER MEDIUM, SAID CARRIER BEING COATED WITH AT LEAST 1% BY WEIGHT OF SODIUM, AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 400* TO 600* F.. IN A REACTION ZONE, AND RECOVERING THEREFROM SAID AROMATIC HYDROCARBONS HAVING A THIOPENE CONTENT OF LESS THAN ONE PART PER MILLION.
Claim 2
Dependent Claim
108 words
A PROCESS FOR REDUCING THE THIOPHENE CONTENT OF AROMATIC HYDROCARBONS CONTAINING MORE THAN ONE PART PER MILLION, SAID AROMATIC HYDROCARBONS BEING SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, XYLENE, AND MIXTURES THEREOF, WHICH CONSISTS OF PASSING SAID AROMATIC HYDROCARBON FEED IN VAPOR FROM THROUGH AN AGITATED BED IN TURBULENT STATE COMPRISING METALLIC SODIUM DISPERSED ON A FINELY DIVIDED, SOLID, INERT CARRIER MEDIUM, SAID CARRIER BEING COATED WITH AT LEAST 1% BY WEIGHT OF SODIUM, AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 400* TO 600* F.. IN A REACTION ZONE, AND RECOVERING THEREFROM SAID AROMATIC HYDROCARBONS HAVING A THIOPENE CONTENT OF LESS THAN ONE PART PER MILLION.
Claim 3
Independent Claim
51 words
A METHOD FOR COATING FINELY DIVIDED INERT SOLID CARRIER PARTICLES WITH SODIUM IN A FLUIDIZED MASS, WHICH COMPRISES ADDING METALLIC SODIUM TO SAID FLUIDIZED MASS ALONG WITH AN AMOUNT OF A METAL SALT OF A HIGH MOLECULAR WEIGHT ALIPHATIC CARBOXYLIC ACID HAVING FROM ABOUT 6 TO 25 CARBON ATOMS PER MOLECULE.
Claim 4
Independent Claim
51 words
A METHOD FOR COATING FINELY DIVIDED INERT SOLID CARRIER PARTICLES WITH SODIUM IN A FLUIDIZED MASS, WHICH COMPRISES ADDING METALLIC SODIUM TO SAID FLUIDIZED MASS ALONG WITH AN AMOUNT OF A METAL SALT OF A HIGH MOLECULAR WEIGHT ALIPHATIC CARBOXYLIC ACID HAVING FROM ABOUT 6 TO 25 CARBON ATOMS PER MOLECULE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |