Patent US2790771A successfully refreshed from Google Patents.
US2790771A
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US
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Lubricating composition
Assignee: Republic Steel Corp
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Filing: 1954-10-12
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Granted: 1957-04-30
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Expires: 1974-10-12
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Prust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:00
CPC Classifications
C; C10; C10M; C10M3/00; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A SYNTHETIC LUBRICANT, FOR USE IN LUBRICATING METAL CUTTING KNIVES, SAID LUBRICANT HAVING GOOD COLD METAL LUBRICITY AND FILM STRENGTH CHARACTERISTICS AND CHEMICAL AND PHYSICAL STABILITY, SAID LUBRICANT CONSISTING ESSENTIALLY OF AN OLEIC SOAP OF TRIETHANOLAMINE AND FREE TRIETHANOLAMINE AND HAVING PROPERTIES RESULTING FROM ITS PREPARATION BY MIXING TRIETHANOLAMINE AND OLEIC ACID TOGETHER IN THE RATIO OF ABOUT 2 PARTS AND ABOUT 30 PARTS OF OLEIC ACID TO BETWEEN ABOUT 98 PARTS AND ABOUT 70 PARTS OF TRIETHANOLAMINE.
Claim 2
Dependent Claim
78 words
A SYNTHETIC LUBRICANT, FOR USE IN LUBRICATING METAL CUTTING KNIVES, SAID LUBRICANT HAVING GOOD COLD METAL LUBRICITY AND FILM STRENGTH CHARACTERISTICS AND CHEMICAL AND PHYSICAL STABILITY, SAID LUBRICANT CONSISTING ESSENTIALLY OF AN OLEIC SOAP OF TRIETHANOLAMINE AND FREE TRIETHANOLAMINE AND HAVING PROPERTIES RESULTING FROM ITS PREPARATION BY MIXING TRIETHANOLAMINE AND OLEIC ACID TOGETHER IN THE RATIO OF ABOUT 2 PARTS AND ABOUT 30 PARTS OF OLEIC ACID TO BETWEEN ABOUT 98 PARTS AND ABOUT 70 PARTS OF TRIETHANOLAMINE.
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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |