Patent US4510414A successfully refreshed from Google Patents.
Patent US2589450A successfully refreshed from Google Patents.
US2589450A
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Removing color bodies imparted to hydrocarbons in sweetening the same
Assignee: Pure Oil Co
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Filing: 1948-05-22
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Granted: 1952-03-18
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Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 John P Stanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:40
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A CATALYTIC OXIDATION SWEETENING PROCESS FOR PRODUCING A WATER-WHITE, DOCTOR SWEET PETROLEUM PRODUCT, THE STEPS WHICH COMPRISE CONTACTING A MERCAPTAN-CONTAINING PETROLEUM PRODUCT IN THE PRESENCE OF A FREE OXYGEN-CONTAINING GAS WITH A TREATING SOLUTION CONTAINING AN ALKALI METAL HYDROXIDE AND A PHENOLIC TYPE OXIDATION CATALYST, SAID OXIDATION CATALYST BEING CAPABLE OF PROMOTING THE CHEMICAL CONVERSION OF MERCAPTANS TO DISULFIDE AND IMPARTING A DISCOLORATION TO THE DOCTOR SWEET PETROLEUM PRODUCT, AND REMOVING SAID DISCOLORATION BY CONTACTING SAID TREATED HYDROCRBONS WITH AN ALIPHATIC ALKANOLAMINE CONTAINING ALKANOL GROUPS HAVING 2 TO 6 CARBON ATOMS.
Claim 2
Dependent Claim
92 words
IN A CATALYTIC OXIDATION SWEETENING PROCESS FOR PRODUCING A WATER-WHITE, DOCTOR SWEET PETROLEUM PRODUCT, THE STEPS WHICH COMPRISE CONTACTING A MERCAPTAN-CONTAINING PETROLEUM PRODUCT IN THE PRESENCE OF A FREE OXYGEN-CONTAINING GAS WITH A TREATING SOLUTION CONTAINING AN ALKALI METAL HYDROXIDE AND A PHENOLIC TYPE OXIDATION CATALYST, SAID OXIDATION CATALYST BEING CAPABLE OF PROMOTING THE CHEMICAL CONVERSION OF MERCAPTANS TO DISULFIDE AND IMPARTING A DISCOLORATION TO THE DOCTOR SWEET PETROLEUM PRODUCT, AND REMOVING SAID DISCOLORATION BY CONTACTING SAID TREATED HYDROCRBONS WITH AN ALIPHATIC ALKANOLAMINE CONTAINING ALKANOL GROUPS HAVING 2 TO 6 CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |