US3779758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive process for producing printed circuits employing electroless deposition
Assignee: Kollmorgen Corp
•
Filing: 1969-03-25
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Granted: 1973-12-18
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Expires: 1989-03-25
Abstract
Abstract An adhesive system which provides adhesive compositions to be applied to an insulating base and form printed images thereon. The adhesive compositions include agents which render them photosensitive, and receptive to electroless metals.
Inventors
- 👤 J Polichette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; H05K3/387; C; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C09J163/00; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1605; G; G03; G03C; G03C1/00; G03C1/52; G03C1/62; G03C1/695; G03F; G03F7/00; G03F7/004; G03F7/0047; G03F7/04; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/185; C08; C08L; C08L2666/00; C08L2666/28; H05K2203/00; H05K2203/07; H05K2203/0703; H05K2203/0709
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
30 words
A process according to claim 1 wherein said diazonium compounds are selected from the group consisting of p-diethyl-amino-2-ethoxy benzenediazonium chlorozincate, 4-ethylamino-3-methyl-benzenediazonium chlorozincate, p-diethyl-amino-2-ethoxybenzene- dizaonium chlorozincate, 4-diethylamino-2-Methyl-benzenediazonium chlorozincate and p-morpholinobenzene-diazonium fluoroborate.
Claim 2
Dependent Claim
12 words
A process according to claim 1 wherein the catalyst is palladium chloride.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein the catalyst comprises palladium chloride in admixture with an epoxy resin and an organic solvent.
Claim 4
Dependent Claim
18 words
A process according to claim 1 wherein the electroless metal plating solution contains a source of cupric ions.
Claim 5
Dependent Claim
140 words
A process for producing printed circuits on an insulated base which comprises applying to said base a film of a composition which comprises acrylonitrile-butadiene and a thermosetting phenolic or epoxy resin having dispersed therein a catalyst selected from the group consisting of the salts, oxides or metals of Groups 1B and 8 of the Periodic Table of Elements including mixtures thereof and a light sensitive diazonium compound for enhancing the light sensitiveness of said composition, exposing said film imagewise to an actinic light source, removing the unexposed portion of the film with an organic solvent for said film whereby printed circuit images are formed on the surface of the base in the exposed areas, and immersing the printed circuit images in an electroless metal plating solution containing the metallic salt of the metal to be plated and a reducing agent.
Claim 6
Dependent Claim
12 words
A process according to claim 6 wherein the catalyst is palladium chloride.
Claim 7
Dependent Claim
22 words
A process according to claim 6 wherein the catalyst comprises palladium chloride in admixuture with an epoxy resin and an organic solvent.
Claim 8
Dependent Claim
18 words
A process according to claim 6 wherein the electroless metal plating solution contains a source of cupric ions.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |