Patent US2587252A successfully refreshed from Google Patents.
Patent US2815325A successfully refreshed from Google Patents.
US2815325A
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Lithium soap-boric acid ester containing grease
Assignee: Kendall Refining Co
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Filing: 1955-04-14
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Granted: 1957-12-03
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Michael J Pohorilla
- 👤 Robert K Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:19
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A GREASE COMPOSITION COMPRISING AN OIL OF LUBRICATING VISCOSITY CONTAINING FROM ABOUT 5% TO ABOUT 25% BY WEIGHT OF LITHIUM SOAP AND FROM ABOUT 5% TO ABOUT 20% BY WEIGHT OF AN ORTHOBORIC ACID ESTER, SAID GREASE BEING CHARACTERIZED BY A SUBSTANTIALLY LOWER PENETRATION THAN A SIMILAR GREASE CONTAINING A LIKE AMOUNT OF LITHIUM SOAP BUT FREE OF SAID BORIC ACID ESTER.
Claim 2
Dependent Claim
62 words
A GREASE COMPOSITION COMPRISING AN OIL OF LUBRICATING VISCOSITY CONTAINING FROM ABOUT 5% TO ABOUT 25% BY WEIGHT OF LITHIUM SOAP AND FROM ABOUT 5% TO ABOUT 20% BY WEIGHT OF AN ORTHOBORIC ACID ESTER, SAID GREASE BEING CHARACTERIZED BY A SUBSTANTIALLY LOWER PENETRATION THAN A SIMILAR GREASE CONTAINING A LIKE AMOUNT OF LITHIUM SOAP BUT FREE OF SAID BORIC ACID ESTER.
References Cited (Backward Citations)
US2049072A
Cited
US2721181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |