Patent US2591583A successfully refreshed from Google Patents.
US2591583A
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Rust preventive
Assignee: Standard Oil Development Co
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Filing: 1949-01-21
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Granted: 1952-04-01
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Expires: 1969-01-21
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Moody
- 👤 Jr James W Hand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IMPROVED LEADED GASOLINE FUEL WHICH CONTAINS A LEAD SCAVENGER AGENT AND FROM ABOUT .035% OF AN ALKYL DIAMINE SELECTED FROM THE CLASS OF DIAMINES REPRESENTED BY THE FOLLOWING FORMULA: H2N-R-NH2, WHEREIN R REPRESENTS AN ALKYL GROUP CONTAINING FROM 2-5 CARBON ATOMS.
Claim 2
Dependent Claim
41 words
IMPROVED LEADED GASOLINE FUEL WHICH CONTAINS A LEAD SCAVENGER AGENT AND FROM ABOUT .035% OF AN ALKYL DIAMINE SELECTED FROM THE CLASS OF DIAMINES REPRESENTED BY THE FOLLOWING FORMULA: H2N-R-NH2, WHEREIN R REPRESENTS AN ALKYL GROUP CONTAINING FROM 2-5 CARBON ATOMS.
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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |