US4812353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of circuit board and the like
Assignee: SANKYO KASEI 11-14 KUGAHARA 2-CHOME OTA-KU TOKYO JAPAN A CORP OF JAPAN KK
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Filing: 1987-10-15
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Granted: 1989-03-14
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Expires: 2007-10-15
Abstract
Abstract A process for the production of a molded article such as a circuit board and the like includes applying catalyst such as palladium, gold, etc. to a primary molded article after roughening of its surfaces, then, after such pre-treatment, the primary molded article is set into a mold to form a secondary molded article covered with cover material only leaving a portion to be subjected to metal plating, and then the secondary molded article is removed from the mold and subjected to metal plating, and finally the cover material is removed after metal plating.
Inventors
- 👤 Tetsuo Yumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:26
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/184; H05K1/00; H05K1/02; H05K1/0284; H05K2201/00; H05K2201/01; H05K2201/0183; H05K2201/0187; H05K2201/09; H05K2201/09009; H05K2201/09118; H05K2203/00; H05K2203/14; H05K2203/1407; H05K2203/1476; H05K3/0011; H05K3/0014; H05K3/108; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24612
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
114 words
A process for producing a molded article comprising the steps of molding within a first mold a primary article having a surface with protrusions, roughening said surface and said protrusions of said primary molded article, treating said roughened surface and said roughened protrusions of said primary article with a catalyst, disposing said primary article with its roughened and catalytically treated surfaces and protrusions within a second mold, molding within said second mold a secondary molded article about said first primary molded article such that at least some outer surface sections of said protrusions are exposed, plating said exposed outer surface sections with metal, and stripping said secondary molded article from said primary molded article.
Claim 2
Dependent Claim
114 words
A process for producing a molded article comprising the steps of molding within a first mold a primary article having a surface with protrusions, roughening said surface and said protrusions of said primary molded article, treating said roughened surface and said roughened protrusions of said primary article with a catalyst, disposing said primary article with its roughened and catalytically treated surfaces and protrusions within a second mold, molding within said second mold a secondary molded article about said first primary molded article such that at least some outer surface sections of said protrusions are exposed, plating said exposed outer surface sections with metal, and stripping said secondary molded article from said primary molded article.
Claim 3
Dependent Claim
29 words
A process according to claim 1 wherein said step of roughening the surface of said primary molded article comprises submerging said primary molded article in an acid etching solution.
Claim 4
Dependent Claim
29 words
A process according to claim 2 wherein said acid etching solution is selected from the group consisting of chromic acid/sulfuric acid, acidic ammonium fluoride/nitric acid, and hydrofluoric acid/nitric acid.
Claim 5
Dependent Claim
21 words
A process according to claim 1 wherein said catalyst is selected from the group consisting of palladium, gold, silver and platinum.
Claim 6
Dependent Claim
21 words
A process according to claim 1 further comprising cleansing said primary molded article with a solvent prior to said roughening step.
Claim 7
Dependent Claim
21 words
A process according to claim 1 further comprising cleansing said secondary molded article with a solvent prior to said plating step.
Claim 8
Dependent Claim
16 words
A process according to claim 1 wherein said primary molded article comprises a first plastic material.
Claim 9
Dependent Claim
15 words
A process according to claim 1 wherein said secondary molded article comprises a plastic material.
Claim 10
Dependent Claim
15 words
A process according to claim 1 wherein said primary molded article comprises a ceramic material.
Claim 11
Dependent Claim
13 words
A partially plated molded product made according to the process of claim 1.
Claim 12
Dependent Claim
131 words
A process for producing a partially plated molded product comprising the steps of molding within a first mold a primary article having a surface with protrusions, roughening said surface and said protrusions of said primary molded article, treating said roughened surface and said roughened protrusions of said primary article with a catalyst, plating said roughened surface and said protrusions with a metal base layer, disposing said primary article with its metal base layer within a second mold, molding within said second mold a secondary molded article over said metal base layer of said primary molded article such that at least some outer surface sections of said protrusions are exposed, plating said exposed outer surface sections with an outer metal layer, and stripping said secondary molded article from said primary molded article.
Claim 13
Dependent Claim
131 words
A process for producing a partially plated molded product comprising the steps of molding within a first mold a primary article having a surface with protrusions, roughening said surface and said protrusions of said primary molded article, treating said roughened surface and said roughened protrusions of said primary article with a catalyst, plating said roughened surface and said protrusions with a metal base layer, disposing said primary article with its metal base layer within a second mold, molding within said second mold a secondary molded article over said metal base layer of said primary molded article such that at least some outer surface sections of said protrusions are exposed, plating said exposed outer surface sections with an outer metal layer, and stripping said secondary molded article from said primary molded article.
Claim 14
Dependent Claim
31 words
A process according to claim 11 wherein said step of roughening the surface of said primary molded article comprises submerging or dipping said primary molded article in an acid etching solution.
Claim 15
Dependent Claim
29 words
A process according to claim 12 wherein said acid etching solution is selected from the group consisting of chromic acid/sulfuric acid, acidic ammonium fluoride/nitric acid, and hydrofluoric acid/nitric acid.
Claim 16
Dependent Claim
21 words
A process according to claim 11 wherein said catalyst is selected from the group consisting of palladium, gold, silver and platinum.
Claim 17
Dependent Claim
21 words
A process according to claim 11 further comprising cleansing said primary molded article with a solvent prior to said roughening step.
Claim 18
Dependent Claim
21 words
A process according to claim 11 further comprising cleansing said secondary molded article with a solvent prior to said plating step.
Claim 19
Dependent Claim
16 words
A process according to claim 11 wherein said primary molded article comprises a first plastic material.
Claim 20
Dependent Claim
15 words
A process according to claim 11 wherein said secondary molded article comprises a plastic material.
Claim 21
Dependent Claim
15 words
A process according to claim 11 wherein said primary molded article comprises a ceramic material.
Claim 22
Dependent Claim
13 words
A partially plated molded product made according to the process of claim 11.
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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) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |