Patent US2542159A successfully refreshed from Google Patents.
US2542159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous grease manufacture
Assignee: Pure Oil Co
•
Filing: 1946-12-14
•
Granted: 1951-02-20
•
Expires: 1966-12-14
Abstract
No abstract record available.
Inventors
- 👤 Langley B Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:04
CPC Classifications
C; C10; C10M; C10M5/00; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/043; C10M2201/10; C10M2201/102; C10M2201/103; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/20; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF PREPARING SODIUM SOAP GREASE IN A CONTINUOUS OPERATION COMPRISING PREPARING A SLURRY OF SAID SOAP IN MINERAL OIL, HEATING THE SLURRY TO A TEMPERATURE BETWEEN APPROXIMATELY 220* AND 290* F., AT WHICH THE SOAP IS ABOVE ITS PLASTICITY POINT BUT BELOW ITS TRUE MELTING POINT, HOMOGENIZING THE SLURRY WHILE AT SAID TEMPERATURE UNTIL IT HAS ATTAINED THE DESIRED GREASE STRUCTURE, AND THEN REDUCING THE TEMPERATURE OF THE RESULTING GREASE BELOW THE PLASTICITY POINT OF THE SOAP BEFORE PACKAGING.
Claim 2
Independent Claim
81 words
THE METHOD OF PREPARING SODIUM SOAP GREASE IN A CONTINUOUS OPERATION COMPRISING PREPARING A SLURRY OF SAID SOAP IN MINERAL OIL, HEATING THE SLURRY TO A TEMPERATURE BETWEEN APPROXIMATELY 220* AND 290* F., AT WHICH THE SOAP IS ABOVE ITS PLASTICITY POINT BUT BELOW ITS TRUE MELTING POINT, HOMOGENIZING THE SLURRY WHILE AT SAID TEMPERATURE UNTIL IT HAS ATTAINED THE DESIRED GREASE STRUCTURE, AND THEN REDUCING THE TEMPERATURE OF THE RESULTING GREASE BELOW THE PLASTICITY POINT OF THE SOAP BEFORE PACKAGING.
References Cited (Backward Citations)
US2318668A
Cited
US2374913A
Cited
US2332202A
Cited
US2365037A
Cited
US2372052A
Cited
US2417495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |