US3856686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing the inorganic polymeric graphite fluoride in an improved dispersed state thereof and method for the manufacture of the same
Assignee: Nippon Carbon Co Ltd
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Filing: 1971-12-13
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Granted: 1974-12-24
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Expires: 1991-12-13
Abstract
Abstract The dispersion of an inorganic high molecular weight graphite fluoride having a formula of (CF)n in a lubricant is improved by the addition of finely divided silica particles. An improved lubricant composed of base oil, graphite fluoride, and silica has excellent physical and chemical properties hitherto unattainable.
Inventors
- 👤 K Sato
- 👤 K Nakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:28
CPC Classifications
C; C10; C10M; C10M177/00; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/061; C10M2201/062; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2201/16; C10M2201/18; C10M2205/00; C10M2205/02; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/101; C10M2209/103; C10M2209/12; C10M2211/00; C10M2211/02; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/225; C10M2215/227; C10M2217/00; C10M2217/02; C10M2217/028; C10M2217/04; C10M2217/044; C10M2217/045; C10M2217/06; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/10; C10N2040/135; C10N2040/20; C10N2040/22; C10N2040/46; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; C10N2070/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
DIPPING SAID GRAPHITE FLUORIDE IN AN INERT ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF: ALCOHOL AND SILOXANE, THEREBY REMOVING IMPURITIES ON THE SURFACE THEREOF TO ACTIVATE SAID GRAPHITE FLUORIDE;
Claim 2
Dependent Claim
30 words
DIPPING SAID GRAPHITE FLUORIDE IN AN INERT ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF: ALCOHOL AND SILOXANE, THEREBY REMOVING IMPURITIES ON THE SURFACE THEREOF TO ACTIVATE SAID GRAPHITE FLUORIDE;
Claim 3
Independent Claim
15 words
A METHOD OF MANUFACTURING A DISPERSION OF GRAPHITE FLUORIDE IN WATER, COMPRISING THE STEPS OF:
Claim 4
Independent Claim
15 words
A METHOD OF MANUFACTURING A DISPERSION OF GRAPHITE FLUORIDE IN WATER, COMPRISING THE STEPS OF:
Claim 5
Dependent Claim
24 words
then adding said graphite fluoride to water in an amount of 0.0001 - 60 Percent by weight of graphite fluoride per unit of water;
Claim 6
Dependent Claim
24 words
then adding said graphite fluoride to water in an amount of 0.0001 - 60 Percent by weight of graphite fluoride per unit of water;
Claim 7
Dependent Claim
24 words
THEN ADDING SAID GRAPHITE FLUORIDE TO WATER IN AN AMOUNT OF 0.0001 - 60 PERCENT BY WEIGHT OF GRAPHITE FLUORIDE PER UNIT OF WATER;
Claim 8
Dependent Claim
24 words
THEN ADDING SAID GRAPHITE FLUORIDE TO WATER IN AN AMOUNT OF 0.0001 - 60 PERCENT BY WEIGHT OF GRAPHITE FLUORIDE PER UNIT OF WATER;
Claim 9
Dependent Claim
21 words
The method of claim 1, wherein said mixing and agitating are carried out under a reduced pressure of 1-50 mm Hg.
Claim 10
Dependent Claim
64 words
then adding a colloidal silica powder having a purity of more than 98 percent, a particle size less than 60 millimicrons, with more than 90 percent of said particles being of size less than 20 millimicrons, and having a surface area of 100-400 m2/g, in an amount 1/20 to 50 times by weight of said graphite fluoride to, the graphite fluoride and water; and
Claim 11
Dependent Claim
64 words
then adding a colloidal silica powder having a purity of more than 98 percent, a particle size less than 60 millimicrons, with more than 90 percent of said particles being of size less than 20 millimicrons, and having a surface area of 100-400 m2/g, in an amount 1/20 to 50 times by weight of said graphite fluoride to, the graphite fluoride and water; and
Claim 12
Dependent Claim
64 words
THEN ADDING A COLLOIDAL SILICA POWDER HAVING A PURITY OF MORE THAN 98 PERCENT, A PARTICLE SIZE LESS THAN 60 MILLIMICRONS, WITH MORE THAN 90 PERCENT OF SAID PARTICLES BEING OF SIZE LESS THAN 20 MILLIMICRONS, AND HAVING A SURFACE AREA OF 100-400 M2/G, IN AN AMOUNT 1/20 TO 50 TIMES BY WEIGHT OF SAID GRAPHITE FLUORIDE TO, THE GRAPHITE FLUORIDE AND WATER; AND
Claim 13
Dependent Claim
64 words
THEN ADDING A COLLOIDAL SILICA POWDER HAVING A PURITY OF MORE THAN 98 PERCENT, A PARTICLE SIZE LESS THAN 60 MILLIMICRONS, WITH MORE THAN 90 PERCENT OF SAID PARTICLES BEING OF SIZE LESS THAN 20 MILLIMICRONS, AND HAVING A SURFACE AREA OF 100-400 M2/G, IN AN AMOUNT 1/20 TO 50 TIMES BY WEIGHT OF SAID GRAPHITE FLUORIDE TO, THE GRAPHITE FLUORIDE AND WATER; AND
Claim 14
Dependent Claim
27 words
mixing and agitating said water, graphite fluoride and colloidal silica powder for a period of at least ten minutes under a reduced pressure of 1-720 mm Hg.
Claim 15
Dependent Claim
27 words
mixing and agitating said water, graphite fluoride and colloidal silica powder for a period of at least ten minutes under a reduced pressure of 1-720 mm Hg.
Claim 16
Dependent Claim
27 words
MIXING AND AGITATING SAID WATER, GRAPHITE FLUORIDE AND COLLOIDAL SILICA POWDER FOR A PERIOD OF AT LEAST TEN MINUTES UNDER A REDUCED PRESSURE OF 1-720 MM HG.
Claim 17
Dependent Claim
27 words
MIXING AND AGITATING SAID WATER, GRAPHITE FLUORIDE AND COLLOIDAL SILICA POWDER FOR A PERIOD OF AT LEAST TEN MINUTES UNDER A REDUCED PRESSURE OF 1-720 MM HG.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |