US3278426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxylic acid amine salts or carboxylic acid amides-calcium acetate complexes
Assignee: Chevron USA Inc
•
Filing: 1964-11-05
•
Granted: 1966-10-11
•
Expires: 1984-11-05
Abstract
No abstract record available.
Inventors
- 👤 Dean W Criddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:23
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2201/00; C10M2201/10; C10M2201/102; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/28; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/044; C10M2215/06; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A COMPOSITION HAVING VISCOSITY INDEX IMPROVING AND GELLING PROPERTIES COMPRISING A MAJOR PORTION OF A LIQUID HYDROCARBON AND FROM ABOUT 0.01 TO 35 WEIGHT PERCENT OF THE COMPOSITION OF A COMPLEX OF THE FORMULA:
Claim 2
Dependent Claim
34 words
A COMPOSITION HAVING VISCOSITY INDEX IMPROVING AND GELLING PROPERTIES COMPRISING A MAJOR PORTION OF A LIQUID HYDROCARBON AND FROM ABOUT 0.01 TO 35 WEIGHT PERCENT OF THE COMPOSITION OF A COMPLEX OF THE FORMULA:
References Cited (Backward Citations)
US2940932A
Cited
US3182020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |