Patent US4654750A successfully refreshed from Google Patents.
US4654750A
Expired / Lapsed
US
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Functional substrate and electronic circuit substrate using the same
Assignee: Canon Inc
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Filing: 1985-05-21
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Granted: 1987-03-31
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Expires: 2005-05-21
Abstract
Abstract A functional substrate is produced by forming a diffusion source for fabricating an electronic part in a ceramic substrate which has been made semiconductive by a sintering and subjecting the ceramic substrate to a firing to give plural electronic-part-forming units, isolated from one another, in the ceramic substrate. An electronic circuit comprises the functional substrate and at least electrodes for the electronic-part-forming units.
Inventors
- 👤 Motoo Kumagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:39
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1272; H01G4/1281; H05K1/16; H05K1/162; H05K1/0306; H05K2201/00; H05K2201/01; H05K2201/0183; H05K2201/0187; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09672; H05K2203/00; H05K2203/11; H05K2203/1142; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
57 words
A functional substrate produced by a process which comprises forming a diffusion source on the surface of a ceramic substrate for the fabrication of an electronic part, which ceramic substrate has been made semiconductive by sintering, and subjecting the ceramic substrate to a firing to provide plural electronic-part-forming units, isolated from one another, in the ceramic substrate.
Claim 2
Dependent Claim
57 words
A functional substrate produced by a process which comprises forming a diffusion source on the surface of a ceramic substrate for the fabrication of an electronic part, which ceramic substrate has been made semiconductive by sintering, and subjecting the ceramic substrate to a firing to provide plural electronic-part-forming units, isolated from one another, in the ceramic substrate.
Claim 3
Dependent Claim
17 words
A functional substrate according to claim 1 in which the diffusion source is metal or metal oxide.
Claim 4
Dependent Claim
67 words
An electronic circuit substrate which comprises a functional substrate produced by forming a diffusion source on the surface of a ceramic substrate for the fabrication of an electronic part, which ceramic substrate has been made semiconductive by sintering, and subjecting the ceramic substrate to a firing to provide plural electronic-part-forming units, isolated from one another, in the ceramic substrate, and at least electrodes for the electronic-part-forming units.
Claim 5
Dependent Claim
67 words
An electronic circuit substrate which comprises a functional substrate produced by forming a diffusion source on the surface of a ceramic substrate for the fabrication of an electronic part, which ceramic substrate has been made semiconductive by sintering, and subjecting the ceramic substrate to a firing to provide plural electronic-part-forming units, isolated from one another, in the ceramic substrate, and at least electrodes for the electronic-part-forming units.
Claim 6
Dependent Claim
18 words
An electronic circuit substrate according to claim 3 in which the diffusion source is metal or metal oxide.
Claim 7
Dependent Claim
16 words
An electronic circuit substrate according to claim 3 in which the electronic part is a capacitor.
Claim 8
Dependent Claim
13 words
The substrate of claim 2 or 4 in which said metal is Bi.
Claim 9
Dependent Claim
14 words
The substrate of claim 2 or 4 in which said metal oxide is CuO.
Claim 10
Dependent Claim
16 words
The substrate of claim 2 or 4 in which said metal oxide is MnO 2 .
Claim 11
Dependent Claim
16 words
The substrate of claim 2 or 4 in which said metal oxide is BaMnO 4 .
Claim 12
Dependent Claim
16 words
The substrate of claim 2 or 4 in which said metal oxide is KMnO 4 .
Claim 13
Dependent Claim
18 words
The substrate of claim 2 or 4 in which said metal oxide is Tl 2 O 3 .
Claim 14
Dependent Claim
18 words
The substrate of claim 2 or 4 in which said metal oxide is Fe 2 O 3 .
Claim 15
Dependent Claim
16 words
An electronic circuit substrate according to claim 3 in which the electronic part is a resistor.
Claim 16
Dependent Claim
16 words
An electronic circuit substrate according to claim 3 in which the electronic part is an insulator.
Claim 17
Dependent Claim
16 words
An electronic circuit substrate according to claim 3 in which the electronic part is a diode.
Claim 18
Dependent Claim
16 words
An electronic circuit substrate according to claim 3 in which the electronic part is a transistor.
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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |