Patent US2935389A successfully refreshed from Google Patents.
US2935389A
Expired / Lapsed
US
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Rust inhibited mineral oil compositions
Assignee: American Oil Co
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Filing: 1956-07-30
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Granted: 1960-05-03
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Harvey R Titsworth
- 👤 Eugene C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:20
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; Y; Y10; Y10S; Y10S164/00; Y10S164/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A LIGHT LIQUID FUEL FRACTION OF MINERAL OIL CONTAINING BETWEEN ABOUT 0.0001% AND 0.01% BY WEIGHT OF A DIAMINE SALT OF AN ACYLSARCOSINE, WHEREIN THE DIAMINE CORRESPONDS WITH THE GENERAL FORMULA RNHCH2CH2CH2NH2 AND THE ACYLSARCOSINE CORRESPONDS WITH THE FORMULA R''CON(CH3)CH2COOH IN WHICH R AND R'' ARE ALKYL RADICALS HAVING FROM 8 TO 20 CARBON ATOMS.
Claim 2
Dependent Claim
55 words
A LIGHT LIQUID FUEL FRACTION OF MINERAL OIL CONTAINING BETWEEN ABOUT 0.0001% AND 0.01% BY WEIGHT OF A DIAMINE SALT OF AN ACYLSARCOSINE, WHEREIN THE DIAMINE CORRESPONDS WITH THE GENERAL FORMULA RNHCH2CH2CH2NH2 AND THE ACYLSARCOSINE CORRESPONDS WITH THE FORMULA R''CON(CH3)CH2COOH IN WHICH R AND R'' ARE ALKYL RADICALS HAVING FROM 8 TO 20 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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |