Patent US4512854A successfully refreshed from Google Patents.
US4512854A
Expired / Lapsed
US
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Method of electroplating printed circuits
Assignee: Beiersdorf AG
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Filing: 1983-10-27
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Granted: 1985-04-23
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Expires: 2003-10-27
Abstract
Abstract A process for electroplating a printed circuit board utilizing an improved masking tape for partially covering the surfaces of the circuit board is provided. The masking tape comprises a foil-like carrier and a coating consisting of an adhesive material applied to one side of the foil-like carrier. At least one electrical conductor is arranged on the coating of the masking tape and forms a unit therewith. The electrical conductor connects the surfaces to be electroplated of the printed circuit board with one another and with a frame carried by the printed circuit board.
Inventors
- 👤 Klaus Grah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/22; H05K3/24; H05K3/243; C; C25; C25D; C25D5/00; C25D5/02; C25D5/022; H05K3/241; H05K3/242; H05K1/00; H05K1/02; H05K1/11; H05K1/117; H05K2203/00; H05K2203/01; H05K2203/0191; H05K2203/07; H05K2203/0703; H05K2203/0723
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
In a process for electroplating a printed circuit board, the improvement comprising partially covering the surfaces of said printed circuit board with a masking tape, said masking tape comprising (a) a foil-like carrier; (b) a coating consisting of an adhesive material applied to one side of the foil-like carrier; (c) at least one electrical conductor arranged on the coating of the masking tape and forming a unit therewith, said electrical conductor consisting of a mixture of varnish and metal powder; and (d) a frame carried by the printed circuit board, said electrical conductor connecting the surfaces to be electroplated of the printed circuit board with one another and with the frame carried by the printed circuit board.
Claim 2
Dependent Claim
117 words
In a process for electroplating a printed circuit board, the improvement comprising partially covering the surfaces of said printed circuit board with a masking tape, said masking tape comprising (a) a foil-like carrier; (b) a coating consisting of an adhesive material applied to one side of the foil-like carrier; (c) at least one electrical conductor arranged on the coating of the masking tape and forming a unit therewith, said electrical conductor consisting of a mixture of varnish and metal powder; and (d) a frame carried by the printed circuit board, said electrical conductor connecting the surfaces to be electroplated of the printed circuit board with one another and with the frame carried by the printed circuit board.
Claim 3
Dependent Claim
15 words
An electroplating process as claimed in claim 1, wherein the foil-like carrier consists of paper.
Claim 4
Dependent Claim
15 words
An electroplating process as claimed in claim 1, wherein the foil-like carrier consists of plastic.
Claim 5
Dependent Claim
14 words
An electroplating process as claimed in claim 1, wherein the adhesive material is self-adhesive.
Claim 6
Dependent Claim
25 words
An electroplating process as claimed in claim 1, wherein the applying of the coating to the foil-like carrier is effected by a heat activation process.
Claim 7
Dependent Claim
140 words
In a process for electroplating a printed circuit board, said printed circuit board having a frame electrically isolated from surfaces on said printed circuit board to be electroplated, the improvement comprising partially covering surfaces on said printed circuit board with a masking tape, said masking tape comprising (a) a foil-like carrier; (b) a coating consisting of an adhesive material on one side of the foil-like carrier, said adhesive material having been applied to said foil-like carrier by a heat activation process; and (c) at least one electrical conductor arranged on the coating of the masking tape and forming a unit therewith, said electrical conductor consisting of a mixture of varnish and metal powder; said electrical conductor connecting the surfaces to be electroplated of the printed circuit board with one another and with the frame carried by the printed circuit board.
Claim 8
Dependent Claim
140 words
In a process for electroplating a printed circuit board, said printed circuit board having a frame electrically isolated from surfaces on said printed circuit board to be electroplated, the improvement comprising partially covering surfaces on said printed circuit board with a masking tape, said masking tape comprising (a) a foil-like carrier; (b) a coating consisting of an adhesive material on one side of the foil-like carrier, said adhesive material having been applied to said foil-like carrier by a heat activation process; and (c) at least one electrical conductor arranged on the coating of the masking tape and forming a unit therewith, said electrical conductor consisting of a mixture of varnish and metal powder; said electrical conductor connecting the surfaces to be electroplated of the printed circuit board with one another and with the frame carried by the printed circuit board.
References Cited (Backward Citations)
US2834723A
Cited
US4000045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |