US2902983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating internal combustion engines
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-12-31
•
Granted: 1959-09-08
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jesse B Patherg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:01
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1233; C10L1/1241; C10L1/14; C10L1/18; C10L1/1814; C10L1/182; C10L1/1828; C10L1/188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE HAVING A COMPRESSION RATIO OF AT LEAST ABOUT 7/1, WHICH COMPRISES INITIALLY OPERATING THE ENGINE ON A NONCONTRIBUTING LUBRICANT HAVING A RESINIFICATION INDEX LESS THAN 10 MG./5 G. AND A NON-CONTRIBUTING GASOLINE HAVING A RESINIFICASTION INDEX LESS THAN 40 MG./200 G., SAID NONCONTRIBUTING GASOLINE CONTAINING A GASOLINE-SOLUBLE METAL COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE GASOLINE-SOLUBLE COMPOUNDS OF CHROMIUM, COPPER, MANGANESE, ZINC, NICKEL, COBALT, CADMIUM, MOLYBDENUM AND IRON; SAID COMPOUND BEING OF A CHARACTER TO PROVIDE AN OXIDE OF THE METAL UNDER THE CONDITIONS WITHIN THE COMBUSTION CHAMBERS OF THE ENGINE; AND THEREAFTER OPERATING THE ENGINE ON A GASOLINE AND LUBRICANT COMBINATION ORDINARILY FORMING EXCESSIVE DEPOSITS WITHIN THE COMBUSTION CHAMBERS OF THE ENGINE.
Claim 2
Independent Claim
122 words
A METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE HAVING A COMPRESSION RATIO OF AT LEAST ABOUT 7/1, WHICH COMPRISES INITIALLY OPERATING THE ENGINE ON A NONCONTRIBUTING LUBRICANT HAVING A RESINIFICATION INDEX LESS THAN 10 MG./5 G. AND A NON-CONTRIBUTING GASOLINE HAVING A RESINIFICASTION INDEX LESS THAN 40 MG./200 G., SAID NONCONTRIBUTING GASOLINE CONTAINING A GASOLINE-SOLUBLE METAL COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE GASOLINE-SOLUBLE COMPOUNDS OF CHROMIUM, COPPER, MANGANESE, ZINC, NICKEL, COBALT, CADMIUM, MOLYBDENUM AND IRON; SAID COMPOUND BEING OF A CHARACTER TO PROVIDE AN OXIDE OF THE METAL UNDER THE CONDITIONS WITHIN THE COMBUSTION CHAMBERS OF THE ENGINE; AND THEREAFTER OPERATING THE ENGINE ON A GASOLINE AND LUBRICANT COMBINATION ORDINARILY FORMING EXCESSIVE DEPOSITS WITHIN THE COMBUSTION CHAMBERS OF THE ENGINE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |