Patent US3235503A successfully refreshed from Google Patents.
US3235503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing alkylene polyamine reaction product
Assignee: Chevron USA Inc
•
Filing: 1963-03-28
•
Granted: 1966-02-15
•
Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Vries Louis De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:00
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10M; C10M149/00; C10M149/02; C10M149/06; C10L1/2364; C10L1/2368; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/16; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/108; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/04; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL OF LUBRICATING VISCOSITY AND A MINOR PROPORTION SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF AN OIL-SOLUBLE POLYMERIC DISPERSANT CONSISTING OF A MIXTURE OF RANDOMLY DISTRIBUTED RECURRING COMPONENT UNITS HAVING THE FORMULA
Claim 2
Dependent Claim
42 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF AN OIL OF LUBRICATING VISCOSITY AND A MINOR PROPORTION SUFFICIENT TO IMPROVE THE DETERGENT CHARACTERISTICS OF AN OIL-SOLUBLE POLYMERIC DISPERSANT CONSISTING OF A MIXTURE OF RANDOMLY DISTRIBUTED RECURRING COMPONENT UNITS HAVING THE FORMULA
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |