US2961308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline containing a tetrahydropyrimidine to reduce carburetor deposits
Assignee: ExxonMobil Oil Corp
•
Filing: 1958-08-27
•
Granted: 1960-11-22
•
Expires: 1978-08-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry J Andress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:55
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A MOTOR GASOLINE CONTAINING BETWEEN ABOUT 1 POUND AND ABOUT 200 POUNDS PER 1000 BARRELS OF GASOLINE OF A TETRAHYDROPYRIMIDINE HAVING THE STRUCTURE:
Claim 2
Dependent Claim
23 words
A MOTOR GASOLINE CONTAINING BETWEEN ABOUT 1 POUND AND ABOUT 200 POUNDS PER 1000 BARRELS OF GASOLINE OF A TETRAHYDROPYRIMIDINE HAVING THE STRUCTURE:
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |