Patent US4634826A successfully refreshed from Google Patents.
US4634826A
Expired / Lapsed
US
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Method for producing electric circuits in a thin layer, the tool to implement the method, and products obtained therefrom
Assignee: Solems SA
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Filing: 1985-02-20
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Granted: 1987-01-06
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Expires: 2005-02-20
Abstract
Abstract Thin-layered conductive or semi-conductive electric circuits are made on a thin conductive or semi-conductive layer that was previously deposited on an electric insulating substrate. The electric circuits are produced by attacking with an electro-erosion tool the thin layer so as to form insulated paths thereon.
Inventors
- 👤 Ionel Solomon
- 👤 Jacques Meot
- 👤 Patrick Meligne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:51
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/14; H; H05; H05K; H05K3/00; H05K3/02; H05K3/08; H05K2201/00; H05K2201/03; H05K2201/032; H05K2201/0326; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0121
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of: depositing the thin layer onto an insulating electric substrate; submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer; applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof; and moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits.
Claim 2
Independent Claim
133 words
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of: depositing the thin layer onto an insulating electric substrate; submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer; applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof; and moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits.
Claim 3
Dependent Claim
50 words
The method according to claim 1, wherein the applying step further comprises the steps of: adjusting the dimension of the arc; and wherein the adjusting step further including: adjusting the electrical resistance per surface unit of the thin layer; and adjusting the profile and the displacement velocity of the tool.
Claim 4
Dependent Claim
33 words
The method according to claim 2, wherein the applying step further comprises: applying a voltage of approximately 40-150 volts and a current of approximately 30-150 mA to the tip of the electro-erosion tool.
Claim 5
Dependent Claim
31 words
The method according to claim 3, wherein the submerging step further comprises: submerging the thin layer in an environment including one of a group of an electrolyte and a dielectric liquid.
Claim 6
Dependent Claim
19 words
The method according to claim 4, further comprising: submerging the thin layer into a composition of water and ethanol.
Claim 7
Dependent Claim
18 words
The method according to claim 5, wherein the depositing step further comprises: depositing the thin layer onto glass.
Claim 8
Independent Claim
182 words
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of: depositing the thin layer onto an insulating electric substrate; submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer; applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof; and moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits; wherein the tool includes: a supply bobbin; a return bobbin; a roller interposed between the supply and return bobbins; and a metal wire drawn tautly between the bobbins and partially bent around the roller, the wire partially protruding from the roller for producing along its length the electro-erosion tip.
Claim 9
Independent Claim
182 words
A method of producing desired electric circuits in a thin layer having certain electrical conductivity, comprising the steps of: depositing the thin layer onto an insulating electric substrate; submerging the thin layer into an environment which, when properly stimulated, is capable of electro-chemically changing the chemical composition of the thin layer; applying the tip of an electro-erosion tool to the thin layer for producing between the tip and the thin layer an electro-erosion arc, the arc and the environment electro-chemically changing the thin layer at the point of the arc contact for producing an insulating compound having chemical composition different from the thin layer at the contact point thereof; and moving the tool in relation to the thin layer along a predetermined insulation path for producing in the thin layer the desired circuits; wherein the tool includes: a supply bobbin; a return bobbin; a roller interposed between the supply and return bobbins; and a metal wire drawn tautly between the bobbins and partially bent around the roller, the wire partially protruding from the roller for producing along its length the electro-erosion tip.
Claim 10
Dependent Claim
45 words
The method according to claim 7 wherein the tool of the applying and moving steps further comprises: means for guiding the wire between the roller and the bobbins, the guided wire forming on either side of the roller angles with the surface of the substrate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |