Patent US2744854A successfully refreshed from Google Patents.
US2744854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of mercaptans
Assignee: Universal Oil Products Co
•
Filing: 1952-06-30
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Granted: 1956-05-08
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Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Peter Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:49
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A METHOD OF OXIDIZING A MERCAPTAN WHICH COMPRISES REACTING THE MERCAPTAN WITH A OXIDIZING AGENT IN THE PRESENCE OF A METAL CHELATE AND A PHENYLENE DIAMINE.
Claim 2
Independent Claim
26 words
A METHOD OF OXIDIZING A MERCAPTAN WHICH COMPRISES REACTING THE MERCAPTAN WITH A OXIDIZING AGENT IN THE PRESENCE OF A METAL CHELATE AND A PHENYLENE DIAMINE.
References Cited (Backward Citations)
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US2496536A
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US2552399A
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US2659691A
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US2565349A
Cited
US2651595A
Cited
US2616833A
Cited
US2616831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |