US2766178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing nitrogen bases from hydrocarbon oils by treatment with an organicbase exchange resin
Assignee: Universal Oil Products Co
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Filing: 1948-08-20
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Granted: 1956-10-09
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Expires: 1968-08-20
Abstract
No abstract record available.
Inventors
- 👤 Warren W Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:26
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
IN THE PROCESS OF PURIFYING OILS CONTAINING BASIC NITROGENOUS CONTAMINANTS, THE STEP WHICH COMPRISES SUBJECTING SUCH AN OIL IN LIQUID PHASE TO CONTACT IN THE PRESENCE OF WATER WITH AN ORGANIC BASE EXCHANGE RESIN, AND SEPARATING THE THUS CONTACTED OIL FROM THE RESIN.
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |