Patent US2955084A successfully refreshed from Google Patents.
US2955084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating hydrocarbons
Assignee: —
•
Filing: —
•
Granted: 1960-10-04
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Expires: 1977-10-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:52
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A METHOD OF PROCESS HYDROCARBON BASE LUBRICATING OIL HAVING A VISCOSITY AT 100*F. OF FROM 10 TO 500 CENTISTOKES TO YIELD A PRODUCT HAVING A HIGHER ASH CONTENT AND A GREATER DETERGENCY WHICH COMPRISES REACTING THE OIL WITH AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 3% BY WEIGHT OF THE OIL OF A STRONG METAL BASE SELECTED FROM THE GROUP CONSISTING OF METALSL OF GROUPS 1 AND II OF THE PERIODIC TABLE AT ABOUT 350*F. FOR A TIME SUFFICIENT TO EFFECT REACTION BUT LESS THAN TWO HOURS WHILE BLOWING WITH NITROGEN IN THE PRESENCE OF OXYGEN.
Claim 2
Independent Claim
99 words
A METHOD OF PROCESS HYDROCARBON BASE LUBRICATING OIL HAVING A VISCOSITY AT 100*F. OF FROM 10 TO 500 CENTISTOKES TO YIELD A PRODUCT HAVING A HIGHER ASH CONTENT AND A GREATER DETERGENCY WHICH COMPRISES REACTING THE OIL WITH AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.5 TO ABOUT 3% BY WEIGHT OF THE OIL OF A STRONG METAL BASE SELECTED FROM THE GROUP CONSISTING OF METALSL OF GROUPS 1 AND II OF THE PERIODIC TABLE AT ABOUT 350*F. FOR A TIME SUFFICIENT TO EFFECT REACTION BUT LESS THAN TWO HOURS WHILE BLOWING WITH NITROGEN IN THE PRESENCE OF OXYGEN.
References Cited (Backward Citations)
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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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |