US3190734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust inhibiting composition
Assignee: Sinclair Research Inc
•
Filing: 1959-07-27
•
Granted: 1965-06-22
•
Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:30
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/188; C10L1/1881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LIGHT, NORMALLY LIQUID PETROLEUM DISTILLATE HAVING A VISCOSITY NOT EXCEEDING THAT OF PETROLEUM GAS OIL INTO WHICH HAS BEEN INCORPORATED AN AMOUNT SUFFICIENT TO INHIBIT CORROSION OF FERROUS SURFACES OF A PETROLEUM DISTILLATE COMPATIBLE, N-DI-ALKYL, BIS(HYDROXYPHENYL) CARBOXYLIC ACID AMIDE, WHEREIN THE CARBOXYLIC ACID RADICAL IS IN AN ALIPHATIC CHAIN OF 4 TO 8 CARBON ATOMS, EACH ALKYL GROUP OF SAID N-DI-ALKYL GROUP CONTAINING AT LEAST 16 CARBON ATOMS.
Claim 2
Dependent Claim
69 words
A LIGHT, NORMALLY LIQUID PETROLEUM DISTILLATE HAVING A VISCOSITY NOT EXCEEDING THAT OF PETROLEUM GAS OIL INTO WHICH HAS BEEN INCORPORATED AN AMOUNT SUFFICIENT TO INHIBIT CORROSION OF FERROUS SURFACES OF A PETROLEUM DISTILLATE COMPATIBLE, N-DI-ALKYL, BIS(HYDROXYPHENYL) CARBOXYLIC ACID AMIDE, WHEREIN THE CARBOXYLIC ACID RADICAL IS IN AN ALIPHATIC CHAIN OF 4 TO 8 CARBON ATOMS, EACH ALKYL GROUP OF SAID N-DI-ALKYL GROUP CONTAINING AT LEAST 16 CARBON ATOMS.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |