US2915470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease manufacturing process for pigment or dye gelled oils
Assignee: Shell Development Co
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Filing: 1957-12-16
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Granted: 1959-12-01
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Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jack W Armstrong
- 👤 Harold A Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:54
CPC Classifications
C; C10; C10M; C10M5/00; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/04; C10M2207/08; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/068; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/225; C10M2215/226; C10M2215/227; C10M2215/24; C10M2215/28; C10M2215/30; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/06; C10M2223/061; C10M2223/065; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/14; C10N2010/16; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE PROCESS FOR THE PERARATION OF A GREASE COMPOSITION WHICH COMPRISESD (A) COMMINGLING AN AQUEOUS GREASE-FORMING DYE SUSPENSION WITH A MAJOR PROPORTION, BASED ON THE DYE, OF A HYDROPHOBIC LUBRICATING OIL; (B) PASSING THE MIXTURE SO FORMED OVER A SURFACE HAVING A SKIN TEMPERATURE BETWEEN ABOUT 300 AND ABOUT 350*F. IN THE FORM OF A FILM BETWEEN 0.001 AND ABOUT 0.02 INCH IN THICKNESS, SAID FILM BEING SHEARED ON SAID SURFACE BY MEANS OF BLADES TRAVELLING AT A RATE OF 1,000-10,000 FEET PER MINUTE, THE RESIDENCE TIME OF THE MIXTURE ON THE SURFACE BEING BETWEEN ABOUT 1 SECOND AND ABOUT 30 SECONDS DURING WHICH TIME SUBSTANTIALLY ALL OF THE WATER ORIGINALLY PRESENT IN THE SUSPENSION IS EVAPORATED; (C) HEATING THE MIXTURE FOR 0.25-4 HOURS AT 250-550*F.; AND (D) THEREAFTER SUBJECTING THE SUBSTANTIALLY ANHYDROUS MIXTURE TO SHEARING ACTION, WHEREBY A GREASE STRUCTURE IS FORMED.
Claim 2
Dependent Claim
143 words
THE PROCESS FOR THE PERARATION OF A GREASE COMPOSITION WHICH COMPRISESD (A) COMMINGLING AN AQUEOUS GREASE-FORMING DYE SUSPENSION WITH A MAJOR PROPORTION, BASED ON THE DYE, OF A HYDROPHOBIC LUBRICATING OIL; (B) PASSING THE MIXTURE SO FORMED OVER A SURFACE HAVING A SKIN TEMPERATURE BETWEEN ABOUT 300 AND ABOUT 350*F. IN THE FORM OF A FILM BETWEEN 0.001 AND ABOUT 0.02 INCH IN THICKNESS, SAID FILM BEING SHEARED ON SAID SURFACE BY MEANS OF BLADES TRAVELLING AT A RATE OF 1,000-10,000 FEET PER MINUTE, THE RESIDENCE TIME OF THE MIXTURE ON THE SURFACE BEING BETWEEN ABOUT 1 SECOND AND ABOUT 30 SECONDS DURING WHICH TIME SUBSTANTIALLY ALL OF THE WATER ORIGINALLY PRESENT IN THE SUSPENSION IS EVAPORATED; (C) HEATING THE MIXTURE FOR 0.25-4 HOURS AT 250-550*F.; AND (D) THEREAFTER SUBJECTING THE SUBSTANTIALLY ANHYDROUS MIXTURE TO SHEARING ACTION, WHEREBY A GREASE STRUCTURE IS FORMED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |