US2648643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine corrosion preventive
Assignee: Standard Oil Development Co
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Filing: 1950-06-21
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Granted: 1953-08-11
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Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Adams William Henry
- 👤 Ervine William Denis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:26
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/06; C10M2205/14; C10M2205/16; C10M2205/17; C10M2205/22; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
A COMPOSITION CONSISTING ESSENTIALLY OF 1 TO 10 PARTS BY WEIGHT OF MICROCRYSTALLINE WAX OF MELTING POINT BETWEEN 135* AND 210* F., 3 TO 15 PARTS OF MINERAL BASE LUBRICATING OIL, 0.01 TO 0.05 PART OF A PREDOMINANTLY ISOBUTYLENE POLYMER OF MOLECULAR WEIGHT BETWEEN 20,000 AND 200,000, 0.05 TO 5 PARTS OF THE FRIEDEL-CRAFTS CONDENSATION PRODUCT OF CHLORINATED WAX AND NAPHTHALENE, 0.5 TO 2 PARTS OF A CORROSION INHIBITOR COMPRISING OIL SOLUBLE METAL PETROLEUM SULFONATE AND LANOLINE, AND 20 TO 100 PARTS OF A HYDROCARBON SOLVENT HAVING A BOILING POINT BETWEEN 40* AND 190* C.
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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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |