US3085978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine lubricant
Assignee: Phillips Petroleum Co
•
Filing: 1960-02-25
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Granted: 1963-04-16
•
Expires: 1980-02-25
Abstract
No abstract record available.
Inventors
- 👤 Mitacek Bill
- 👤 Glenn E Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:38
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2040/00; C10N2040/25; C10N2040/255; C10N2040/26; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A TWO-CYCLE, INTERNAL COMBUSTION ENGINE LUBRICANT CONSISTING ESSENTIALLY OF FROM 99 TO 95 VOLUME PERCENT OF A PARAFFIN BASE LUBRICATING OIL AND FROM 1 TO 5 VOLUME PERCENT OF A LUBRICANT ADDITIVE BLEND CONSISTING ESSENTIALLY OF SYNERGISTIC PROPORTIONS OF A POLYMER OF ISOBUTYLENE AND A CALCIUM SALT OF PETROLEUM SULFONIC ACID SUFFICIENT TO REDUCE SPARK PLUG FAILURES, WHEREIN THE VOLUME RATIO OF SAID CALCIUM SALT TO SAID POLYMER IS IN THE RANGE OF 2:1 TO 4:1, AND SAID POLYMER HAS A MEAN MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 1,000 TO 50,000.
Claim 2
Dependent Claim
93 words
A TWO-CYCLE, INTERNAL COMBUSTION ENGINE LUBRICANT CONSISTING ESSENTIALLY OF FROM 99 TO 95 VOLUME PERCENT OF A PARAFFIN BASE LUBRICATING OIL AND FROM 1 TO 5 VOLUME PERCENT OF A LUBRICANT ADDITIVE BLEND CONSISTING ESSENTIALLY OF SYNERGISTIC PROPORTIONS OF A POLYMER OF ISOBUTYLENE AND A CALCIUM SALT OF PETROLEUM SULFONIC ACID SUFFICIENT TO REDUCE SPARK PLUG FAILURES, WHEREIN THE VOLUME RATIO OF SAID CALCIUM SALT TO SAID POLYMER IS IN THE RANGE OF 2:1 TO 4:1, AND SAID POLYMER HAS A MEAN MOLECULAR WEIGHT IN THE RANGE OF FROM ABOUT 1,000 TO 50,000.
References Cited (Backward Citations)
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Cited
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GB773999A
Cited
US2849398A
Cited
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |