Patent US5408350A successfully refreshed from Google Patents.
US3244618A
Expired / Lapsed
US
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Sweetening process using nitrogen oxide catalyst
Assignee: Gulf Research and Development Co
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Filing: 1964-04-22
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Granted: 1966-04-05
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Harold L Dimond
- 👤 Herbert B Fernald
- 👤 Raynor T Sebulsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G17/00; C10G17/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR REDUCING THE MERCAPTAN CONTENT OF A PETROLEUM HYDROCARBON WHICH CONSISTS ESSENTIALLY IN CONTACTING SAID HYDROCARBON WITH A GAS COMPRISING MOLECULAR OXYGEN AND AN EFFECTIVE CATALYTIC AMOUNT OF A NITROGEN OXIDE SELECTED FROM THE GROUP CONSISTING OF NO, NO2, N2O3, N2O4 AND N2O5.
Claim 2
Dependent Claim
45 words
A PROCESS FOR REDUCING THE MERCAPTAN CONTENT OF A PETROLEUM HYDROCARBON WHICH CONSISTS ESSENTIALLY IN CONTACTING SAID HYDROCARBON WITH A GAS COMPRISING MOLECULAR OXYGEN AND AN EFFECTIVE CATALYTIC AMOUNT OF A NITROGEN OXIDE SELECTED FROM THE GROUP CONSISTING OF NO, NO2, N2O3, N2O4 AND N2O5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |