US2592435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decomposition product deposit reduction
Assignee: Shell Development Co
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Filing: 1949-05-14
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Granted: 1952-04-08
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Expires: 1969-05-14
Abstract
No abstract record available.
Inventors
- 👤 Antoine E Lacomble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/23; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/10; C10M2215/102; C10M2215/18; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
26 words
A LUBRICATION OIL COMPOSITION COMPRISING A PREDOMINANT AMOUNT OF A MINERAL LUBRICATING OIL AND A MINOR BUT EFFECTIVE DEPOSIT REDUCING AMOUNT OF AN OIL-SOLUBLE ALIPHATIC NITRAMINE.
References Cited (Backward Citations)
US2009818A
Cited
US2197167A
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GB599132A
Cited
US2462052A
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US2438452A
Cited
US2432839A
Cited
US2514017A
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US2514018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |