US2671048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of hydrocarbon distillates
Assignee: Universal Oil Products Co
•
Filing: 1951-03-01
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Granted: 1954-03-02
•
Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Rosenwald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
C; C10; C10G; C10G27/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE METHOD OF SWEETENING A SOUR HYDROCARBON DISTILLATE WHICH COMPRISES CONTACTING SAID DISTILLATE IN THE PRESENCE OF AIR WITH A PHENYLENE DIAMINE SWEETENING AGENT AND A HYDROCARBON SOLUBLE ORGANIC BASE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC POLYAMINES, HETEROCYCLIC NITROGEN COMPOUNDS AND QUATERNARY AMMONIUM COMPOUNDS.
Claim 2
Independent Claim
46 words
THE METHOD OF SWEETENING A SOUR HYDROCARBON DISTILLATE WHICH COMPRISES CONTACTING SAID DISTILLATE IN THE PRESENCE OF AIR WITH A PHENYLENE DIAMINE SWEETENING AGENT AND A HYDROCARBON SOLUBLE ORGANIC BASE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC POLYAMINES, HETEROCYCLIC NITROGEN COMPOUNDS AND QUATERNARY AMMONIUM COMPOUNDS.
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |