US4326239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit board
Assignee: Sony Corp
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Filing: 1979-09-11
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Granted: 1982-04-20
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Expires: 1999-09-11
Abstract
Abstract A printed circuit board includes an insulating board; at least one pair of conductive patterns arranged on the insulating board and spaced from each other by a predetermined length; and a paint layer formed in the space between the conductive patterns within a predetermined range.
Inventors
- 👤 Mitsuo Ohsawa
- 👤 Masato Yamamura
- 👤 Toshio Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:12
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/303; H05K3/305; H05K1/00; H05K1/02; H05K1/0266; H05K1/0269; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09772; H05K2201/10; H05K2201/10431; H05K2201/10583; H05K2201/10613; H05K2201/10621; H05K2201/10636; H05K2203/00; H05K2203/16; H05K2203/161; H05K2203/168; H05K3/32; H05K3/34; H05K3/3452; Y; Y02; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A printed circuit board comprising: (a) an insulating board; (b) at least one pair of conductive patterns arranged on said insulating board and spaced from each other by a predetermined length; (c) a solder resisting layer having a predetermined color formed on said insulating board; (d) an adhesive layer visual boundary guide in the form of a paint layer of insulating material formed on the solder resisting layer in the space between said conductive patterns within a predetermined range; (e) said paint layer having another color contrasting with said predetermined color of the solder resisting layer; (f) an adhesive layer applied onto said paint layer but not substantially beyond its boundaries; (g) a leadless electric part being fixed in contact with said conductive patterns with said adhesive layer; and (h) said paint layer having a good affinity with said solder resisting layer and adhesive layer such that said leadless electric part is fixed securely in position.
Claim 2
Dependent Claim
156 words
A printed circuit board comprising: (a) an insulating board; (b) at least one pair of conductive patterns arranged on said insulating board and spaced from each other by a predetermined length; (c) a solder resisting layer having a predetermined color formed on said insulating board; (d) an adhesive layer visual boundary guide in the form of a paint layer of insulating material formed on the solder resisting layer in the space between said conductive patterns within a predetermined range; (e) said paint layer having another color contrasting with said predetermined color of the solder resisting layer; (f) an adhesive layer applied onto said paint layer but not substantially beyond its boundaries; (g) a leadless electric part being fixed in contact with said conductive patterns with said adhesive layer; and (h) said paint layer having a good affinity with said solder resisting layer and adhesive layer such that said leadless electric part is fixed securely in position.
Claim 3
Dependent Claim
35 words
A printed circuit board according to claim 1, in which a letter or figure representing the kind, number or denomination of said leadless electric part to be mounted is printed adjacent to said paint layer.
Claim 4
Dependent Claim
38 words
A printed circuit board according to claim 1, in which another conductive cross pattern is formed on said insulating board between said pair of conductive patterns and under said solder resisting layer, said paint layer, and said adhesive.
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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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |