Patent US3144403A successfully refreshed from Google Patents.
US3144403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening hydrocarbons
Assignee: Sunoco Inc
•
Filing: 1961-11-24
•
Granted: 1964-08-11
•
Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Lawrence N Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:18
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
PROCESS FOR REDUCING THE MERCAPTAN CONTENT OF HYDROCARBONS BY OXIDATION OF MERCAPTANS OF DISULFIDES WHICH COMPRISES CONTACTING HYDROCARBONS CONTINING MERCAPTANS WITH A PHENYLENE DIAMINE INHIBITOR SWEETENING AGENT AND OXYGEN IN THE PRESENCE OF AN ALKALINE CATALYST CONSISTING ESSENTIALLY OF A SOLID ANION EXCHANGE RESIN, AND SEPARATING HYDROCARBONS HAVING REDUCED MERCAPTAN CONTENT FROM THE SOLID RESIN.
Claim 2
Dependent Claim
55 words
PROCESS FOR REDUCING THE MERCAPTAN CONTENT OF HYDROCARBONS BY OXIDATION OF MERCAPTANS OF DISULFIDES WHICH COMPRISES CONTACTING HYDROCARBONS CONTINING MERCAPTANS WITH A PHENYLENE DIAMINE INHIBITOR SWEETENING AGENT AND OXYGEN IN THE PRESENCE OF AN ALKALINE CATALYST CONSISTING ESSENTIALLY OF A SOLID ANION EXCHANGE RESIN, AND SEPARATING HYDROCARBONS HAVING REDUCED MERCAPTAN CONTENT FROM THE SOLID RESIN.
References Cited (Backward Citations)
US2899396A
Cited
US2616831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |