Patent US4675786A successfully refreshed from Google Patents.
US4675786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible circuit board and method of making the same
Assignee: Nippon Mektron KK
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Filing: 1985-06-21
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Granted: 1987-06-23
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Expires: 2005-06-21
Abstract
Abstract A flexible circuit board and method of making the same is presented wherein the circuit board includes conductive through-holes for installation of components and includes a sloping electrolytic plating portion between the through-hole portions and remaining flexible portions of the circuit board.
Inventors
- 👤 Tsutomu Mizuko
- 👤 Toshiyuki Tsukahara
- 👤 Masahiro Yoshida
- 👤 Koji Nemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:29
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/0277; H05K1/028; H05K3/00; H05K3/10; H05K3/108; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09736; H05K2203/00; H05K2203/05; H05K2203/0548; H05K2203/0557; H05K3/22; H05K3/24; H05K3/243; H05K3/40; H05K3/42; H05K3/425; H05K3/427
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A flexible circuit board comprising: a flexible insulative base material having electrically conductive material on two opposing sides thereof; circuit pattern means being formed in said conductive material on both sides of said base material; at least one through-hole conductive portion between said two sides at a selected location through said base material defining at least one installation portion; a first electrolytic plating layer being substantially uniform over said installation portion; a second electrolytic plating layer having a sloping portion adjacent said installation portion and defining a transition portion.
Claim 2
Dependent Claim
89 words
A flexible circuit board comprising: a flexible insulative base material having electrically conductive material on two opposing sides thereof; circuit pattern means being formed in said conductive material on both sides of said base material; at least one through-hole conductive portion between said two sides at a selected location through said base material defining at least one installation portion; a first electrolytic plating layer being substantially uniform over said installation portion; a second electrolytic plating layer having a sloping portion adjacent said installation portion and defining a transition portion.
Claim 3
Dependent Claim
20 words
The circuit board of claim 1 including: a nonelectrolytic plating layer over said installation portion and said electrically conductive material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |