US2846394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rheopectic grease composition
Assignee: Standard Oil Co
•
Filing: 1954-11-30
•
Granted: 1958-08-05
•
Expires: 1974-11-30
Abstract
No abstract record available.
Inventors
- 👤 Lawrence C Brunstrum
- 👤 Hubert J Liehe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:54
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A LUBIRCANT COMPOSITON WHICH IS FLUID AS PRODUCED IN THE UNWORKED STATE AND WHICH SETS UP TO GREASE CONSISTENCY ON MECHANICAL WORKING WHICH ESSENTIALLY COMPRISES A MINERAL OIL BASE CONTAINING ABOUT 1 TO 3 1/2 PERCENT BY WEIGHT OF A LITHIUM HYDROXY STEARATE AND WHICH IS CHARACTERIZED BY A SOAP PARTICLE SIZE OF ABOUT 0.1 TO 0.7 MICRON IN LENGTH AND A MULTI-PARTICLE SOAP AGGLOMERATE-IN-OIL STRUCTURE IN THE UNWORKED STATE, SAID SOAP PARTICLE SIZE AND SOAP PARTICLE-OIL STRUCTURE FORMED BY CHILLING SUCH A COMPOSITION FROM THE MELTED SOAP STATE TO ABOUT 100* TO 150*F., HOMOGENIZING, REHEATING THE HOMOGENIZED COMPOSITION TO 150* TO 250*F. AND DILUTING TO SUCH A SOAP CONTENT.
Claim 2
Dependent Claim
110 words
A LUBIRCANT COMPOSITON WHICH IS FLUID AS PRODUCED IN THE UNWORKED STATE AND WHICH SETS UP TO GREASE CONSISTENCY ON MECHANICAL WORKING WHICH ESSENTIALLY COMPRISES A MINERAL OIL BASE CONTAINING ABOUT 1 TO 3 1/2 PERCENT BY WEIGHT OF A LITHIUM HYDROXY STEARATE AND WHICH IS CHARACTERIZED BY A SOAP PARTICLE SIZE OF ABOUT 0.1 TO 0.7 MICRON IN LENGTH AND A MULTI-PARTICLE SOAP AGGLOMERATE-IN-OIL STRUCTURE IN THE UNWORKED STATE, SAID SOAP PARTICLE SIZE AND SOAP PARTICLE-OIL STRUCTURE FORMED BY CHILLING SUCH A COMPOSITION FROM THE MELTED SOAP STATE TO ABOUT 100* TO 150*F., HOMOGENIZING, REHEATING THE HOMOGENIZED COMPOSITION TO 150* TO 250*F. AND DILUTING TO SUCH A SOAP CONTENT.
References Cited (Backward Citations)
US2312725A
Cited
US2450254A
Cited
US2514286A
Cited
US2629695A
Cited
US2648634A
Cited
US2697693A
Cited
US2704363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |