Patent US2899388A successfully refreshed from Google Patents.
US2899388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium base grease containing a nickel
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/14; C10N2010/16; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A BASE MINERAL LUBRICATING OIL THICKENED TO GREASE CONSISTENCY WITH ANHYDROUS CALCIUM 12-HYDROXY STEARATE AND ABOUT 0.1 TO 5.0% BY WEIGHT OF AN OIL-SOLUBLE METAL SALT OF A DIALKYL DITHIOPHOSPHORIC ACID DIESTER, SAID ALKYL GROUPS CONTAINING ABOUT 4 TO 12 CARBON ATOMS, AND THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF NICKEL, LEAD AND LITHIUM.
Claim 2
Dependent Claim
70 words
A LUBRICATING GREASE COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A BASE MINERAL LUBRICATING OIL THICKENED TO GREASE CONSISTENCY WITH ANHYDROUS CALCIUM 12-HYDROXY STEARATE AND ABOUT 0.1 TO 5.0% BY WEIGHT OF AN OIL-SOLUBLE METAL SALT OF A DIALKYL DITHIOPHOSPHORIC ACID DIESTER, SAID ALKYL GROUPS CONTAINING ABOUT 4 TO 12 CARBON ATOMS, AND THE METAL OF SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF NICKEL, LEAD AND LITHIUM.
References Cited (Backward Citations)
US2364283A
Cited
US2607734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |