US2659654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for manufacture of sand cores
Assignee: Standard Oil Development Co
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Filing: 1950-09-14
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Granted: 1953-11-17
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Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 John B Tuttle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:09
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CORE OIL COMPOSITION COMPRISING ABOUT 30 TO 50% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF DRYING OIL, 15 TO 35% OF AN UNSATURATED CLAYFILTERED POLYMER OF CRACKED GASOLINE DERIVATION AND 5 TO 20% BY WEIGHT OF A VISCOUS MINERAL OIL OF AT LEAST 100 AND NOT MORE THAN 500 S.S.U. VISCOSITY OF 210* F.
Claim 2
Dependent Claim
56 words
A CORE OIL COMPOSITION COMPRISING ABOUT 30 TO 50% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF DRYING OIL, 15 TO 35% OF AN UNSATURATED CLAYFILTERED POLYMER OF CRACKED GASOLINE DERIVATION AND 5 TO 20% BY WEIGHT OF A VISCOUS MINERAL OIL OF AT LEAST 100 AND NOT MORE THAN 500 S.S.U. VISCOSITY OF 210* F.
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) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |