US2767142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating compositions
Assignee: Shell Development Co
•
Filing: 1953-06-29
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Granted: 1956-10-16
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 Rupert C Morris
- 👤 John L Van Winkle
- 👤 Paul H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:58
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/12; C10M137/14; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/44; C07F9/4403; C07F9/4407; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/08; C10M2219/082; C10M2219/086; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/06; C10M2223/063; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO STABILIZE AGAINST OXIDATION DETERIORATION AND IMPART EXTREME PRESSURE PROPERTIES TO SAID LIQUID VEHICLE, OF A MIDDLE HALO-PHOSPHORUS COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
41 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF LUBRICATING OIL AND A MINOR AMOUNT, SUFFICIENT TO STABILIZE AGAINST OXIDATION DETERIORATION AND IMPART EXTREME PRESSURE PROPERTIES TO SAID LIQUID VEHICLE, OF A MIDDLE HALO-PHOSPHORUS COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2674616A
Cited
US2683691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |