Patent US2699997A successfully refreshed from Google Patents.
US2699997A
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Core oil containing a drying oil and asphaltenes
Assignee: Standard Oil Co
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Filing: 1951-07-31
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Granted: 1955-01-18
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Expires: 1971-07-31
Abstract
No abstract record available.
Inventors
- 👤 Harley F Hardman
- 👤 Everett C Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:27
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/24; B22C1/22; B22C1/2206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A CORE OIL CONSISTING ESSSENTIALLY OF A MIXTURE OF A DRYING OIL CAPABLE OF BINDING SAND TO PRODUCE A CORE AND AN AMOUNT OF ASPHALTENE IN THE RANGE FROM ABOUT 5% UP TO ABOUT 40% BY WEIGHT TO IMPROVE THE BINDING PROPERTIES OF THE DRYING OIL, SAID CORE OIL BEING CAPABLE OF PRODUCING A CORE HAVING A HIGHER TENSILE STRENGTH THAN A CORE PRODUCED FROM A DRYING OIL ALONE.
Claim 2
Dependent Claim
69 words
A CORE OIL CONSISTING ESSSENTIALLY OF A MIXTURE OF A DRYING OIL CAPABLE OF BINDING SAND TO PRODUCE A CORE AND AN AMOUNT OF ASPHALTENE IN THE RANGE FROM ABOUT 5% UP TO ABOUT 40% BY WEIGHT TO IMPROVE THE BINDING PROPERTIES OF THE DRYING OIL, SAID CORE OIL BEING CAPABLE OF PRODUCING A CORE HAVING A HIGHER TENSILE STRENGTH THAN A CORE PRODUCED FROM A DRYING OIL ALONE.
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) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |