Patent US3252890A successfully refreshed from Google Patents.
US3252890A
Expired / Lapsed
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Oxidation of mercaptans using phthalocyanine and mercury catalyst
Assignee: Universal Oil Products Co
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Filing: 1964-08-28
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Granted: 1966-05-24
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Expires: 1984-08-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Warne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:15
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G27/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
27 words
METHOD OF TREATING A SOUR HYDROCARBON DISTILLATE WHICH COMPRISES REACTING MERCAPTANS CONTAINED IN SAID DISTILLATE WITH FREE OXYGEN IN CONTACT WITH A PHTHALOCYAANINE CATALYST AND MERCURY IONS.
References Cited (Backward Citations)
US1692756A
Cited
US1963556A
Cited
US2671049A
Cited
US2882224A
Cited
US2966452A
Cited
US3128245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |