Patent US4988412A successfully refreshed from Google Patents.
US4988412A
Expired / Lapsed
US
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Selective electrolytic desposition on conductive and non-conductive substrates
Assignee: Lockheed Martin Corp
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Filing: 1988-12-27
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Granted: 1991-01-29
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Expires: 2008-12-27
Abstract
Abstract Selective electrolytic deposition is provided on a body having a conductive surface comprised of two different conductive materials in which one of the conductive materials forms a surface layer upon exposure to a particular ambient environment and wherein that surface layer prevents electroplating on that material in the particular electroplating environment utilized for the electroplating of the desired pattern on the other conductive material.
Inventors
- 👤 Yung S. Liu
- 👤 Herbert S. Cole
- 👤 Renato Guida
- 👤 James W. Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H10W70/614; C; C25; C25D; C25D5/00; C25D5/02; C25D5/022; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/243; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; H05K2201/00; H05K2201/20; H05K2201/2081; H05K3/241
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
A method of electroplating in accordance with a desired plating pattern, said method comprising the steps of: (a) providing a body having a surface which is conductive, said body comprising: a substrate, and a substantially continuous conductive structure disposed over said substrate, said conductive structure comprising first and second different conductive materials, both of which are exposed at said conductive surface of said body, said first conductive material being exposed in said desired plating pattern and said second conductive material having a native dielectric film formed thereon; (b) coupling an electrode to said conductive structure; (c) applying a plating polarity of power to said electrode; and, after step (c) (d) immersing at least the portion of said body to be plated in an electroplating bath for a time sufficient to form a desired thickness of electroplated material on said first conductive material without electroplating on said second conductive material.
Claim 2
Independent Claim
149 words
A method of electroplating in accordance with a desired plating pattern, said method comprising the steps of: (a) providing a body having a surface which is conductive, said body comprising: a substrate, and a substantially continuous conductive structure disposed over said substrate, said conductive structure comprising first and second different conductive materials, both of which are exposed at said conductive surface of said body, said first conductive material being exposed in said desired plating pattern and said second conductive material having a native dielectric film formed thereon; (b) coupling an electrode to said conductive structure; (c) applying a plating polarity of power to said electrode; and, after step (c) (d) immersing at least the portion of said body to be plated in an electroplating bath for a time sufficient to form a desired thickness of electroplated material on said first conductive material without electroplating on said second conductive material.
Claim 3
Dependent Claim
22 words
The method recited in claim 1 further comprising the step of: forming said native dielectric film by exposing said body to air.
Claim 4
Dependent Claim
30 words
The method recited in claim 1 wherein said second conductive material is selected from the group consisting of titanium, chromium, aluminum, alloys containing titanium, chromium or aluminum and mixtures thereof.
Claim 5
Dependent Claim
13 words
The method recited in claim 3 wherein said second conductive material comprises titanium.
Claim 6
Dependent Claim
13 words
The method recited in claim 4 wherein said second conductive material is titanium.
Claim 7
Dependent Claim
13 words
The method recited in claim 3 wherein said second conductive material comprises chromium.
Claim 8
Dependent Claim
13 words
The method recited in claim 6 wherein said second conductive material is chromium.
Claim 9
Dependent Claim
13 words
The method recited in claim 3 wherein said second conductive material comprises aluminum.
Claim 10
Dependent Claim
13 words
The method recited in claim 8 wherein said second conductive material is aluminum.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |