US5273639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Probe electrode
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1992-06-29
•
Granted: 1993-12-28
•
Expires: 2012-06-29
Abstract
Abstract A method of making a probe electrode includes the steps of kneading a mixture of 75-80% by weight of a carbon material, 10-14% by weight of an organic binder and 7-9% by weight of mineral oil, forming the kneaded mixture into a predetermined shape, heating the shaped mixture in air the temperature of up to 300 DEG C. and raising the temperature in an atmosphere of inert gas up to 1000 DEG C.
Inventors
- 👤 Hiroko Kaneko
- 👤 Ken Nozaki
- 👤 Akira Negishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:02
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/308
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
50 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores.
Claim 2
Dependent Claim
50 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores.
Claim 3
Dependent Claim
18 words
A probe electrode as claimed in claim 1, wherein said carbon material is graphite containing no heavy metals.
Claim 4
Dependent Claim
27 words
A probe electrode as claimed in claim 1, wherein said organic binder is selected from the group consisting of ineyl acetate resin, epoxy resin and phenol resin.
Claim 5
Dependent Claim
21 words
A probe electrode as claimed in claim 1, wherein said mineral oil impregnated into said calcined mixture is silicone or VASELINE.
Claim 6
Dependent Claim
23 words
A probe electrode as claimed in claim 1, wherein said probe electrode has a diameter in the range of 0.3 to 0.5 mm.
Claim 7
Dependent Claim
23 words
A probe electrode as claimed in claim 5, wherein said probe electrode has a bending strength of more than 20,000 gf/mm 2 .
Claim 8
Dependent Claim
59 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of a 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores and make said calcined mixture impenetrable to liquids.
Claim 9
Dependent Claim
59 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of a 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores and make said calcined mixture impenetrable to liquids.
Claim 10
Dependent Claim
18 words
A probe electrode as claimed din claim 7, wherein said carbon material is graphite containing no heavy metals.
Claim 11
Dependent Claim
27 words
A probe electrode as claimed in claim 7, wherein said organic binder is selected from the group consisting of vinyl acetate resin, epoxy resin and phenol resin.
Claim 12
Dependent Claim
21 words
A probe electrode as claimed in claim 7, wherein said mineral oil impregnated into said calcined mixture is silicone or VASELINE.
Claim 13
Dependent Claim
23 words
A probe electrode as claimed in claim 7, wherein said probe electrode has a diameter in the range of 0.3 to 0.5 mm.
Claim 14
Dependent Claim
23 words
A probe electrode as claimed in claim 11, wherein said probe electrode has a bending strength of more than 20,000 gf/mm 2 .
Claim 15
Dependent Claim
60 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of a 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores whereby said electrode prevents an electrolyte form entering therein.
Claim 16
Dependent Claim
60 words
A probe electrode comprising substantially 100% of carbon prepared by kneading a mixture of a 75-80 wt % carbon material, a 10-14 wt % organic binder, and 7-9 wt % mineral oil, calcining said mixture to form a calcined mixture and impregnating mineral oil into said calcined mixture to fill pores whereby said electrode prevents an electrolyte form entering therein.
Claim 17
Dependent Claim
18 words
A probe electrode as claimed in claim 13, wherein said carbon material is graphite containing no heavy metals.
Claim 18
Dependent Claim
27 words
A probe electrode as claimed in claim 13, wherein said organic binder is selected for the group consisting of vinyl acetate resin, epoxy resin and phenol resin.
Claim 19
Dependent Claim
21 words
A probe electrode as claimed in claim 13, wherein said mineral oil impregnated into said calcined mixture is silicone or VASELINE.
Claim 20
Dependent Claim
23 words
A probe electrode as claimed din claim 13, wherein said probe electrode has a diameter in the range of 0.3 to 0.5 mm.
Claim 21
Dependent Claim
23 words
A probe electrode as claimed in claim 17, wherein said probe electrode has a bending strength of more than 20,000 gf/mm 2 .
References Cited (Backward Citations)
US3838188A
Cited
US4226633A
Cited
US4221773A
Cited
US4330387A
Cited
US4596669A
Cited
US4511442A
Cited
US4551220A
Cited
US4554063A
Cited
US4536272A
Cited
US4775455A
Cited
US4814307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-27 | 1997-06-28 | 1997-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-27 | 2001-06-28 | 2001-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-27 | 2005-06-28 | 2005-12-28 | $7700.00 | Window Closed / Lapsed |