Patent US4666735A successfully refreshed from Google Patents.
US4666735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing product having patterned metal layer
Assignee: Polyonics Corp
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Filing: 1985-10-30
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Granted: 1987-05-19
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Expires: 2005-10-30
Abstract
Abstract A multilayered composite product useful as an electrical circuit is produced by coating a base with a photoimagable resin free of catalyst or catalyst activator for electroless metal deposition. The resin is patterned by exposure to a desired light, through a mask followed by development. The patterned cured resin is selectively chemically modified while avoiding chemical modification of the base to render the cured resin receptive to a metal catalyst. The metal catalyst which promotes subsequent electroless metal deposition is selectively absorbed on the patterned cured resin and is converted to a catalytically active form. A conductive metal then is deposited selectively on the catalyst-containing patterned cured resin.
Inventors
- 👤 Merwin F. Hoover
- 👤 Ann B. Salamone
- 👤 Jan Vandebult
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:58
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/46; H05K3/4644; H05K3/4661; H10; H10D; H10D84/00; H10D84/01; H05K1/00; H05K1/16; H05K1/162; H05K1/165; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09563; H05K2201/09818; H05K2201/09909; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
156 words
The process for forming a composite product which comprises applying to a base a layer of a photosensitive resin, exposing said resin to actinic light in a pattern to form a solvatable resin and a patterned nonsolvatable resin, removing solvatable resin by contacting said solvatable resin with a solvent for the solvatable resin, chemically modifying said patterned resin to render the surface of said resin receptive to a catalyst capable of promoting electroless metal deposition without chemically modifying said base, contacting said chemically modified patterned resin with a catalyst composition capable of promoting electroless metal deposition, thereby to absorb said catalyst on said patterned layer, rinsing said patterned resin and said base to remove excess loose catalyst therefrom, converting said absorbed metal catalyst to an electrolytically active form capable of causing electroless metal deposition and electrolessly depositing a metal layer on said patterned resin selectively without effecting electroless deposition of said metal layer on said base.
Claim 2
Dependent Claim
156 words
The process for forming a composite product which comprises applying to a base a layer of a photosensitive resin, exposing said resin to actinic light in a pattern to form a solvatable resin and a patterned nonsolvatable resin, removing solvatable resin by contacting said solvatable resin with a solvent for the solvatable resin, chemically modifying said patterned resin to render the surface of said resin receptive to a catalyst capable of promoting electroless metal deposition without chemically modifying said base, contacting said chemically modified patterned resin with a catalyst composition capable of promoting electroless metal deposition, thereby to absorb said catalyst on said patterned layer, rinsing said patterned resin and said base to remove excess loose catalyst therefrom, converting said absorbed metal catalyst to an electrolytically active form capable of causing electroless metal deposition and electrolessly depositing a metal layer on said patterned resin selectively without effecting electroless deposition of said metal layer on said base.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein said base is a flexible substrate.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein said base is a rigid substrate.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein said metal layer is copper.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said metal layer is nickel.
Claim 7
Dependent Claim
14 words
The process of claim 1 wherein the resin is chemically modified with aqueous alkali.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the resin is chemically modified with quaternary ammonium hydroxide.
Claim 9
Dependent Claim
14 words
The process of claim 1 wherein the resin is chemically modified with aqueous acids.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein said photosensitive resin is cured when exposed to said actinic light.
Claim 11
Dependent Claim
22 words
The process of claim 1 wherein said photosensitive resin is rendered more solvatable in a solvent when exposed to said actinic light.
Claim 12
Dependent Claim
22 words
The process of claim 1 wherein said photosensitive resin is rendered less solvatable in a solvent when exposed to said actinic light.
Claim 13
Dependent Claim
13 words
The process of claim 1 wherein said catalyst composition comprises copper and nickel.
Claim 14
Dependent Claim
12 words
The process of claim 1 wherein said catalyst composition comprises copper/nickel boride.
Claim 15
Dependent Claim
13 words
The process of claim 1 wherein said catalyst composition comprises palladium and tin.
Claim 16
Dependent Claim
12 words
The process of claim 1 wherein said catalyst composition comprises nickel boride.
Claim 17
Dependent Claim
12 words
The process of claim 1 wherein said actinic light is ultraviolet light.
Claim 18
Dependent Claim
12 words
The process of claim 1 wherein said base comprises a polyimide composition.
Claim 19
Dependent Claim
12 words
The process of claim 1 wherein said base comprises a polyester composition.
Claim 20
Dependent Claim
12 words
The process of claim 1 wherein said base comprises a polyolefin composition.
Claim 21
Dependent Claim
12 words
The process of claim 1 wherein said base comprises a polycarbonate composition.
Claim 22
Dependent Claim
12 words
The process of claim 1 wherein said base comprises a polyetherimide composition.
Claim 23
Dependent Claim
18 words
The process of claim 1 wherein said substrate comprises a composite of a resin and a reinforcing component.
Claim 24
Dependent Claim
17 words
The process of claim 1 wherein said patterned photosensitive resin composition comprises an epoxy containing resin composition.
Claim 25
Dependent Claim
17 words
The process of claim 1 wherein said patterned photosensitive resin composition comprises a novolak containing resin composition.
Claim 26
Dependent Claim
16 words
The process of claim 1 wherein said patterned photosensitive resin composition comprises acrylic containing resin composition.
Claim 27
Dependent Claim
18 words
The process of claim 1 wherein said patterned photosensitive resin composition comprises an unsaturated polyolefin containing resin composition.
Claim 28
Dependent Claim
22 words
The process of claim 1 wherein a second metal layer is bonded to said first metal layer bonded to the patterned resin.
Claim 29
Dependent Claim
19 words
The process of claim 1 wherein a second metal layer is electrolytically applied to said first electroless metal layer.
Claim 30
Dependent Claim
19 words
The process of claim 1 wherein a second metal layer is electrolessly applied to said first electroless metal layer.
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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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |