US2562767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweetening of petroleum distillates
Assignee: Standard Oil Development Co
•
Filing: 1950-03-23
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Granted: 1951-07-31
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Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 John G Browder
- 👤 Alvin R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:03
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/12; C10G27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD FOR SWEETENING A SOUR PETROLEUM DISTILLATE CONTAINING MERCAPTANS BOILING BELOW 750* F. WHICH COMPRISES ADDING TO SAID DISTILLATE AN AMOUNT OF BETA-NAPHTHOL AND METHYL ALCOHOL, SAID METHYL ALCOHOL BEING EMPLOYED IN AN AMOUNT IN THE RANGE BETWEEN 0.5% TO 2.5% BY VOLUME BASED ON SAID DISTILLATE, AND SAID BETANAPHTHOL BEING EMPLOYED IN AN AMOUNT IN THE RANGE BETWEEN 0.05 AND 1 GRAM PER LITER OF SAID DISTILLATE AND THEN CONTACTING SAID DISTILLATE CONTAINING METHYL ALCOHOL AND BETA-NAPHTHOL WITH A SOLUTION OF AN ALKALI METAL HYDROXIDE WHILE ADDING A SUFFICIENT AMOUNT OF A MILD OXIDIZING AGENT TO CONVERT THE MERCAPTANS TO DISULFIDES AND TO OBTAIN A SWEETENED DISTILLATE.
Claim 2
Independent Claim
109 words
A METHOD FOR SWEETENING A SOUR PETROLEUM DISTILLATE CONTAINING MERCAPTANS BOILING BELOW 750* F. WHICH COMPRISES ADDING TO SAID DISTILLATE AN AMOUNT OF BETA-NAPHTHOL AND METHYL ALCOHOL, SAID METHYL ALCOHOL BEING EMPLOYED IN AN AMOUNT IN THE RANGE BETWEEN 0.5% TO 2.5% BY VOLUME BASED ON SAID DISTILLATE, AND SAID BETANAPHTHOL BEING EMPLOYED IN AN AMOUNT IN THE RANGE BETWEEN 0.05 AND 1 GRAM PER LITER OF SAID DISTILLATE AND THEN CONTACTING SAID DISTILLATE CONTAINING METHYL ALCOHOL AND BETA-NAPHTHOL WITH A SOLUTION OF AN ALKALI METAL HYDROXIDE WHILE ADDING A SUFFICIENT AMOUNT OF A MILD OXIDIZING AGENT TO CONVERT THE MERCAPTANS TO DISULFIDES AND TO OBTAIN A SWEETENED DISTILLATE.
References Cited (Backward Citations)
US2457635A
Cited
US2494687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |