US4130855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive microcircuit
Assignee: Individual
•
Filing: 1976-03-05
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Granted: 1978-12-19
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Expires: 1996-03-05
Abstract
Abstract A passive microcircuit is made, according to the invention, on a metal substrate, a dielectric layer being coated on at least one of its sides, whereon all components of the passive microcircuit, current-carrying tracks, pads, capacitor electrodes and resistors, are arranged. All the components and a dielectric layer of the passive microcircuit are based on the material of the metal substrate. The proposed passive microcircuit ensures dense wiring, directed heat removal, high reliability and shock- and vibration-proof properties, formation of RC-structures with distributed elements.
Inventors
- 👤 Gennady G. Smolko
- 👤 Gennady F. Vasiliev
- 👤 Nordari M. Chikovani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:19
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/6875; H05; H05K; H05K1/00; H05K1/16; H05K1/02; H05K1/03; H05K1/05; H05K1/053; H05K1/162; H05K1/167; Y; Y10; Y10S; Y10S428/00; Y10S428/901
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A passive microcircuit comprising: a metal substrate; a dielectric layer formed upon said metal substrate; current-carrying tracks, pads, capacitor electrodes and resistors, all being components of said passive microcircuit and arranged on said dielectric layer, all components and the dielectric layer being at least partially formed from the same material of said metal substrate, to closely match the temperature coefficients of expansion of the components, layer and substrate.
Claim 2
Dependent Claim
68 words
A passive microcircuit comprising: a metal substrate; a dielectric layer formed upon said metal substrate; current-carrying tracks, pads, capacitor electrodes and resistors, all being components of said passive microcircuit and arranged on said dielectric layer, all components and the dielectric layer being at least partially formed from the same material of said metal substrate, to closely match the temperature coefficients of expansion of the components, layer and substrate.
Claim 3
Dependent Claim
29 words
A passive microcircuit as claimed in claim 1, wherein said metal substrate, current-carrying tracks, pads, capacitor electrodes are made from aluminum, whereas said resistors are made from aluminum oxynitride.
Claim 4
Dependent Claim
27 words
A passive microcircuit as claimed in claim 1, wherein said dielectric layer is made from anode aluminum oxide Al 2 O 3 and has a non-uniform thickness.
Claim 5
Dependent Claim
27 words
A passive microcircuit as claimed in claim 2, wherein said dielectric layer is made from anode aluminum oxide Al 2 O 3 and has a non-uniform thickness.
Claim 6
Dependent Claim
20 words
A passive microcircuit as claimed in claim 3, wherein said dielectric layer is thicker under the current-carrying tracks and pads.
Claim 7
Dependent Claim
20 words
A passive microcircuit as claimed in claim 4, wherein said dielectric layer is thicker under the current-carrying tracks and pads.
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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |