US3772056A
Expired / Lapsed
US
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Sensitized substrates for chemical metallization
Assignee: Kollmorgen Corp
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Filing: 1971-07-29
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Granted: 1973-11-13
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Expires: 1991-07-29
Abstract
Abstract There are provided new articles of manufacture, suitable for the production of metallized bodies, such as printed circuits, dials, nameplates, metallized plastics, glass, ceramics and the like, comprising bases coated with a layer of copper, nickel, cobalt or iron salts or salt compositions, which on exposure to radiant energy, such as heat, light, etc., or chemical reducing agents is converted to a layer of metal nuclei which is non-conductive, but which is capable of catalyzing the deposition of metal onto the base from an electroless metal deposition solution in contact with the metal nuclei.
Inventors
- 👤 J Polichette
- 👤 E Leech
- 👤 F Nuzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:41
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; C23C18/26; C23C18/1601; C23C18/1603; C23C18/1605; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/2086; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/185; H05K3/38; H05K3/381; H05K2203/00; H05K2203/07; H05K2203/0779; H05K2203/0783; H05K2203/12; H05K2203/122; H05K3/386; H05K3/387; Y; Y10; Y10S; Y10S430/00; Y10S430/143; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
14 words
A process as defined in claim 1 wherein said base is a porous material.
Claim 2
Dependent Claim
19 words
A process as defined in claim 1 wherein said base is a non-metallic resinous base with a polarized surface.
Claim 3
Dependent Claim
16 words
A process as defined in claim 1 wherein said base is a metal clad insulating base.
Claim 4
Dependent Claim
20 words
A process as defined in claim 1 wherein said metal salt is reduced to metallic nuclei by exposure to light.
Claim 5
Dependent Claim
18 words
A process as defined in claim 1 wherein said metal salt is reduced by exposure to ultraviolet light.
Claim 6
Dependent Claim
24 words
A process as defined in claim 1 wherein said salt is of the group consisting of reducible salts of copper, nickel, cobalt and iron.
Claim 7
Dependent Claim
16 words
A process as defined in claim 1 wherein said radiation-sensitive composition also includes a metal accelerator.
Claim 8
Dependent Claim
33 words
A process as Defined in claim 1 wherein said reducing agent is a light-sensitive reducing compound of the group consisting of ferric salts, dichromates, anthraquinone disulfonic acids and salts, glycine and L-ascorbic acid.
Claim 9
Dependent Claim
15 words
A process as defined in claim 9 wherein said secondary reducer is a polyhydroxy alcohol.
Claim 10
Dependent Claim
15 words
A process as defined in claim 10 wherein said composition also includes a metal accelerator.
Claim 11
Dependent Claim
18 words
A process as defined in claim 1 wherein said radiation-sensitive reducing agent comprises anthraquinone 2,6-disulfonic acid disodium salt.
Claim 12
Dependent Claim
18 words
A process as defined in claim 12 wherein said composition also comprises stannous chloride as a metal accelerator.
Claim 13
Dependent Claim
31 words
A process as defined in claim 13 wherein said liquid medium also contains citric acid and a polyhydroxy alcohol secondary reducer of the group consisting of glycerine, sorbitol, pentaerythritol and mesoerythritol.
Claim 14
Dependent Claim
33 words
A process as defined in claim 1 wherein said base is thereafter exposed to an electroless metal bath to build up a layer of said electroless metal on said layer of metallic nuclei.
Claim 15
Dependent Claim
40 words
A process as defined in claim 15 wherein the treated base is dried before the exposure to radiant energy, and said base is rinsed after said exposure to radiant energy and prior to the exposure to said electroless metal bath.
Claim 16
Dependent Claim
26 words
A process as defined in claim 15 wherein said electroless metal is of the group consisting of copper, nickel, cobalt, silver, gold, tin, rhodium and zinc.
Claim 17
Dependent Claim
43 words
A process as defined in claim 15 wherein said salt is of the group consisting of reducible salts of copper, nickel, cobalt and iron, and said electroless metal is of the group consisting of copper, nickel, cobalt, silver, gold, tin, rhodium and zinc.
Claim 18
Dependent Claim
21 words
A process as defined in claim 15 wherein said salt is a reducible copper salt and said electroless metal is copper.
Claim 19
Dependent Claim
34 words
An article which comprises a base bearing a layer of a radiation-sensitive composition comprising a reducible salt of a non-noble metal, a radiation-sensitive reducing agent for said salt, a secondary reducer and an acid.
Claim 20
Dependent Claim
14 words
An article as defined in claim 20 wherein said base is a porous material.
Claim 21
Dependent Claim
26 words
An article as defined in claim 20 in which said base is a non-metallic resinous base having a polarized surface underlying said layer of radiation-sensitive composition.
Claim 22
Dependent Claim
16 words
An article as defined in claim 20 wherein said base is a metal clad, non-metallic base.
Claim 23
Dependent Claim
33 words
An article as defined in claim 20 wherein said reducing agent is a light-sensitive reducing compound of the group consisting of ferric salts, dichromates, anthraquinone disulfonic acids and salts, glycine and L-ascorbic acid.
Claim 24
Dependent Claim
50 words
An article as defined in claim 20 wherein said salt is of the group consisting of reducible salts of copper, nickel, cobalt and iron, and said reducing agent is a light-sensitive reducing compound of the group consisting of ferric salts, dichromates, anthraquinone disulfonic acids and salts, glycine and L-ascorbic acid.
Claim 25
Dependent Claim
48 words
An article as defined in claim 20 wherein said radiation-sensitive composition comprises a reducible copper salt, anthraquinone 2,6-disulfonic acid disodium salt as said radiation-sensitive, reducing agent, stannous chloride as a metal accelerator, citric acid and a secondary reducer of the group consisting of glycerine, sorbitol, pentaerythritol and mesoerythritol.
Claim 26
Dependent Claim
15 words
An article as defined in claim 20 wherein said secondary reducer is a polyhydroxy alcohol.
Claim 27
Dependent Claim
16 words
An article as defined in claim 27 wherein said radiation-sensitive composition also includes a metal accelerator.
Claim 28
Dependent Claim
59 words
An article as defined in claim 20 wherein said metal salt is of the group consisting of reducible salts of copper, nickel, cobalt, iron and mixtures thereof capable of reduction to a non-conductive layer of nuclei of said metal and capable of catalyzing the deposition of electroless metal from an electroless metal deposition solution in contact with said nuclei.
Claim 29
Dependent Claim
27 words
An article as defined in claim 29 wherein said radiation-senSitive composition is sensitive to radiant energy of the group consisting of heat, light, X-rays and electron beams.
Claim 30
Dependent Claim
26 words
An article as defined in claim 29 wherein said electroless metal is of the group consisting of copper, nickel, cobalt, silver, gold, tin, rhodium and zinc.
Claim 31
Dependent Claim
21 words
A process as defined in claim 31 wherein said metal salt is a copper salt and said electroless metal is copper.
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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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |