US5001531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functional elemental device and FET sensor provided with the same
Assignee: Terumo Corp
•
Filing: 1990-05-08
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Granted: 1991-03-19
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Expires: 2010-05-08
Abstract
Abstract A functional elemental device and an FET sensor provided with the same, formed by forming a conductive carbide layer between the substrate and a conductive carbon material layer, and organic thin films and were formed on the surface of said conductive carbon material layer. Thereby, the adhesiveness between the substrate and the conductive carbon material layer can be remarkably improved, and peeling does not occur in the case of electrolytic polymerization reaction and film formation, and since the interstitial ions and the like from the substrate can be prevented, the lowering of the function can be prevented, and therefore, there is attained such an effect that the preparation of a thin film covered electrode becomes possible.
Inventors
- 👤 Shuichiro Yamaguchi
- 👤 Takeshi Shimomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:28
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/414
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
44 words
A functional elemental device comprising: a substrate; a conductive carbide layer formed on the surface of said substrate; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
Claim 2
Dependent Claim
44 words
A functional elemental device comprising: a substrate; a conductive carbide layer formed on the surface of said substrate; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
Claim 3
Dependent Claim
16 words
The functional elemental device according to claim 1, wherein said carbide layer is an interstitial compound.
Claim 4
Dependent Claim
16 words
The functional elemental device according to claim 1, wherein said carbide layer is a covalent compound.
Claim 5
Dependent Claim
32 words
The functional elemental device according to claim 1, wherein said organic thin film is a protective film which maintains the characteristics of the conductive carbon material, and has protective action for environment.
Claim 6
Dependent Claim
19 words
The functional elemental device according to claim 1, wherein said organic thin film is an ion-sensitive redox functional film.
Claim 7
Dependent Claim
25 words
The functional elemental device according to claim 5, wherein said external surface of the redox functional film is further covered with an ion selective film.
Claim 8
Dependent Claim
27 words
The functional elemental device according to claim 1, wherein said organic thin film is a redox functional film having gas permeable properties for sensing a specified gas.
Claim 9
Dependent Claim
57 words
An FET sensor comprising: a field effect transistor; a conductive carbide layer formed on the gate electrode of said field effect transistor or on the surface of the elongated part thereof; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
Claim 10
Dependent Claim
57 words
An FET sensor comprising: a field effect transistor; a conductive carbide layer formed on the gate electrode of said field effect transistor or on the surface of the elongated part thereof; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
Claim 11
Dependent Claim
52 words
An FET sensor comprising: a field effect transistor; a conductive carbide layer formed on the surface of the gate insulating film of said field effect transistor; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
Claim 12
Dependent Claim
52 words
An FET sensor comprising: a field effect transistor; a conductive carbide layer formed on the surface of the gate insulating film of said field effect transistor; a conductive carbon material layer formed on said conductive carbide layer; and an organic thin film formed on the surface of said conductive carbon material layer.
References Cited (Backward Citations)
US4137355A
Cited
US4836904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |