US2832737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-functional lubricating oil additives
Assignee: Texaco Inc
•
Filing: 1955-05-13
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Granted: 1958-04-29
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Expires: 1975-05-13
Abstract
No abstract record available.
Inventors
- 👤 James R Roach
- 👤 John R Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:03
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND BETWEEN 2 AND 2 PERCENT BY WEIGHT OF A MIXTURE OF ABOUT 2 PARTS OF THE MAGNESIUM SALT OF N,N-1-DIALKYL DITHIOCARBAMYL ACETIC ACID WHEREIN SAID ALKYL GROUP HAS FROM 4 TO 12 CARBON ATOMS, AND ABOUT 1 PART OF ZINC ALKYL SALICYLATE WHEREIN SAID ALKYL GROUP HAS A AVERAGE OF FROM 20 TO 30 CARBON ATOMS.
Claim 2
Dependent Claim
69 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND BETWEEN 2 AND 2 PERCENT BY WEIGHT OF A MIXTURE OF ABOUT 2 PARTS OF THE MAGNESIUM SALT OF N,N-1-DIALKYL DITHIOCARBAMYL ACETIC ACID WHEREIN SAID ALKYL GROUP HAS FROM 4 TO 12 CARBON ATOMS, AND ABOUT 1 PART OF ZINC ALKYL SALICYLATE WHEREIN SAID ALKYL GROUP HAS A AVERAGE OF FROM 20 TO 30 CARBON ATOMS.
References Cited (Backward Citations)
US2620302A
Cited
US2693447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |