US2760936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of lithium grease
Assignee: National Cylinder Gas Co
•
Filing: 1952-05-20
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Granted: 1956-08-28
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Expires: 1972-05-20
Abstract
No abstract record available.
Inventors
- 👤 Peter J Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:19
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
145 words
THE PROCESS OF PREPARING LITHIUM GREASE COMPRISING FORMING A SLURRY OF LITHIUM STEARATE AND MINERAL OIL CONTAINING SUBTANTIALLY ALL THE LITHIUM STEARATE AND APPROXIMATELY HALF THE OIL DESIRED IN THE FINISHED GREASE, RAISING THE TEMPERATURE OF THE SLURRY TO A TEMPERATURE CONSISTENT WITH COMPLETE SOLUTION OF THE LITHIUM STEARATE IN THE OIL AND ABOVE ABOUT 400* F. TO COMPLETELY DISSOLVE THE LITHIUM STEARATE IN THE OIL AND FORM A HOMOGENEOUS SOLUTION FREE FROM UNDISSOLVED LITHIUM STEARATE PARTICLES BY PASSING THE SLURRY IN A THIN LAYER UNDER AGITATION IN CONTACT WITH A HEAT TRANSFER WALL CONTINUOUSLY MIXING THE REMAINDER OF THE OIL DESIRED IN THE FINISHED GREASE WITH THE HOT SOLUTION UNDER CONDITIONS CONDUCTIVE TO MIXING WITH A MINIMUM OF SHEAR TO PROVIDE INTIMATE MIXING WITHOUT MICELLE DISRUPTION, THE ADDED OIL HAVING A TEMPERATURE SUCH AS TO PRODUCE A RESULTANT TEMPERATURE OF THE MIXED OIL AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |