US2881140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust inhibiting composition
Assignee: Sinclair Refining Co
•
Filing: 1955-06-23
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Granted: 1959-04-07
•
Expires: 1975-06-23
Abstract
No abstract record available.
Inventors
- 👤 Robert W Schrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:22
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
2. A COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO 95 WEIGHT PERCENT OF AN AROMATIC HYDROCARBON SOLVENT, ABOUT 5 TO 65 WEIGHT PERCENT OF AN OXIDATE OF A FOOTS OIL FRACTION AND ABOUT 0.1 TO 4 WEIGHT PERCENT OF A SUBSTANTIALLY DEHYDRATED PARTIALLY OXIDIZED MICROCRYSTALLINE WAX HAVING A SAPONIFICATION NUMBER OF ABOUT 10 TO 150, SAID FOOTS OIL OXIDATE HAVING A MELTING POINT OF ABOUT 80 TO 95*F., AN API GRAVITY OF ABOUT 10 TO 25 AND A SAPONIFICATION NUMBER OF ABOUT 200 TO 325.
Claim 2
Dependent Claim
85 words
2. A COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 50 TO 95 WEIGHT PERCENT OF AN AROMATIC HYDROCARBON SOLVENT, ABOUT 5 TO 65 WEIGHT PERCENT OF AN OXIDATE OF A FOOTS OIL FRACTION AND ABOUT 0.1 TO 4 WEIGHT PERCENT OF A SUBSTANTIALLY DEHYDRATED PARTIALLY OXIDIZED MICROCRYSTALLINE WAX HAVING A SAPONIFICATION NUMBER OF ABOUT 10 TO 150, SAID FOOTS OIL OXIDATE HAVING A MELTING POINT OF ABOUT 80 TO 95*F., AN API GRAVITY OF ABOUT 10 TO 25 AND A SAPONIFICATION NUMBER OF ABOUT 200 TO 325.
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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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |